I can’t find any info online.

I have some mugs coming out of a kiln and would be interested in an exchange with some other beginners 😌

this sub seems to be taken over by ads, like wtf, I would love to revive this sub into something useful!

Enamel color is a kind of decorative techniques imported from foreign countries. Modern people call it "ancient moon", foreign people call it "rose color". It is fine painted porcelain designed for the Qing court royal specially. Its main characteristics are: 1.Large pieces are rare compared with small ones. Most shapes are plates, bowls, cups, bottles, boxes and pots, of which bowls and plates account for most numbers. And each species has different changes. 2.Fetal quality is exquisite and fetal wall is very thin. It is combined closely, uniform and regular. Glaze is extremely fine and their color is extremely white. It can be praised as " white jade without flawless". 3.The bottom axis is white, neither green nor yellow. The surface is smooth and clean. 4.Porcelain is fine and smooth; the color material is dignified; the color is bright and beautiful; the painting technique is exquisite and the production process is complex. 5. The color is bright and soft. Most is the pastel lotus color rather than the sole color. There are many kinds of color. The same thing can appear seven or eight colors, even more than ten. 6. Decorative painting is mostly brushwork with exquisite painting skills. For example, enamel color in Kangxi years are mostly flowers rather than birds; until Yongzheng years, enamel color materials are richer; in Qianlong period, works between pink pastel and enamel color porcelain appeared. Enamel color porcelain can be said to have inherited various advantages since the development of Chinese porcelain in the history. Whether from embryo, molding, painting, materials or from glaze, color, firing technology, enamel color porcelain all can be said the most exquisite one. http://192.168.1.170:7080

Red and green color porcelain is fired in a complex progress. First, people need to fire high temperature white glaze or black flowers on white porcelain well, then using red, green, yellow and other colors to draw out the decoration on the white glaze. After that, people need put it into kilns and fire it under low temperature(about 800℃). It often uses white glaze as the main background color decorated with a large area of red color, which shows a strong folk art atmosphere. Its pictures are usually freehand paintings and decorative patterns are mostly people, flowers and birds as well as landscape. There are many kilns firing red and green color porcelain such as Shanxi Changzhi kiln, Henan Pa village kiln, Shandong Zibo kiln, etc. These kilns are all in the north. At that time, the north was the Jin Dynasty under the rule of Jusen and the South was the Southern Song regime, but people often classified Jin and Liao porcelain under the Song porcelain. Therefore, there is another name for red and green color porcelain: "Song Jia Cai". The word "Jia Cai" is very appropriate, implying that the color is added later, that is, painting on the finished white porcelain glaze, and then firing it under low-temperature so that the color can enter the glaze. Red and green color porcelain of the Jin Dynasty is the first glaze color porcelain in the history. Before red and green color porcelain, the porcelain color is all painted on the billet and then people add glaze and fire it, which is called under-glaze color. The advantage of under-glaze color is that the picture is difficult to fall off with glaze protection. The benefit of glaze color is that it has rich and bright colors and fine picture. As a pioneer in the glaze painted porcelain, the red and green color porcelain of the Jin Dynasty promoted the development of the later porcelain enterprise greatly. http://192.168.1.170:7080/chinastories/

Under glaze red is a kind of under glaze painting fired by Jingdezhen in the Yuan Dynasty. Under glaze red means red under the glaze. It is fired at high temperature(1300℃), using copper oxide to paint colors on the porcelain billet and then applying transparent glaze so that red patterns will appear under the glaze. This artifact began in the Yuan Dynasty; in the Ming Dynasty it entered mature stage and it had more development after the Qing Dynasty. But the really bright color is still rare because of its complex production process. Under glaze red is mostly gray in the Yuan Dynasty. Most products are bowls and tanks. Common ornaments are wrapped lotus, wrapped peony, grass leaves and so on. There are patterns such as character stories, animals and fishes as decoration. In Hongwu years of the Ming Dynasty, under glaze red is more popular, getting great development. At this time, the color of under glaze red is light red with gray. The surface of artifacts has decorative patterns. In addition to bottles and pots, the shapes also have plates, bowls, cans and so on. The oornaments are mostly line-based. There are patterns such as wrapped chrysanthemum, wrapped peony and wrapped lotus as decoration, which is relatively simple compared with the Yuan Dynasty. In early Hongwu years, most products are black and red, and in the late, they are pure red. The products are large with simple and ancient style, rich decorations and powerful momentum, which fully demonstrated the mind and tolerance of the founding king in the Ming Dynasty. The color of under glaze red is red with a sense of level in Yongzheng years of the Qing Dynasty and their shapes are plates, bowls, bottles, etc., more commonly decorated with three fish and five bat. They are fired successfully with beautiful colors. This period can be described as the peak of history. Reference: http://www.ceramicssupply.net/ceramics-knowledge/

Porcelain is related to life. Chinese porcelain art is an important symbol of human civilization. The aesthetic pursuit of people is an expression of mood , and the Song porcelain has played the natural charm to the extreme.

Ru kiln has always ranked the first among the five famous kilns in the Song Dynasty, which have been discussed in some literary notes since the Song Dynasty. Ru kiln, known as "celadon of the first, Ru kiln for the Quebec," has outnumbered other kilns and become royal special tribute. Since Song, Yuan, Ming and Qing Dynasty, Ru porcelain has been regarded as treasures as Shang Yi Zhou Ding. And people said "one piece of Ru porcelain is better than fabulous wealth"!

Song Huizong Zhao Ji believes in Taoism and Taoism advocates aesthetic standard featured with simple nature and indifferent rustic. Ru kiln porcelain in this period is the reflection of this aesthetic taste, reflecting the effortless and carefree ideological realm of Taoist and becoming the fashion of high society in Song Dynasty. The glaze of Ru kiln celadon is light green and elegant with excellent model. And they don’t stress the decorations. It is said that Song Huizong has made a dream and he dreamed about the color of the sky after rainy day. He was very fond of it so he ordered the craftsman of Ru kiln to burn the porcelain with a similar color. Therefore, the azure, between the blue and green color, became synonym of Ru kiln. As an artist, Song Huizong had a very strict aesthetic requirements toward material, color, texture and other aspects of Ru porcelain. Fore more information about Ru porcelain, this website can help you http://192.168.1.170:7080/collections/attributeFilter/Ru%20KILN

White glaze black color, also known as "white to black flowers", "white to black color", is one kind of porcelain color. First, in the process of firing people need put a layer of white make-up soil in the forming porcelain, use a brush dipped in paint to draw the picture on the make-up soil, apply a layer of thin and transparent glass glaze on it and put it into the kiln firing. This process will combine the traditional Chinese painting art with porcelain craftsmanship organically. Most pictures are auspicious patterns with rich ink taste and mellow folk color. The black and white give people a sharp contrast. White glaze with underglaze black color is one of the unique porcelain colors fired by Cizhou kiln in the Song Dynasty. Song porcelain is quite prosperous. The five famous kilns as Ru, Guan, Ge, Ding, jun and other prominent big kiln such as Longquan, Yaozhou, Jianyang are all firing monochrome glaze. Only Cizhou kiln has been painting the black picture on the white porcelain from the Northern Song Dynasty to the present with a kind of momentum "Although there are thousands of kilns, I want to stay my own style". Cizhou kiln, called Pengcheng kiln in Qing Dynasty, is located in Handan, Hebei province. Cizhou kiln is once as famous as Jingdezhen. The theme of black and white flower in Cizhou kiln is abundant. The picture is lively, vivid and attractive. White glaze black color intends to reproduce the effect of impressionistic ink painting, but the ink can be divided into five colors. Thus black in ink painting has deep and shallow changes. The black of Cizhou kiln can’t achieve this effect. Although the contrast is strong, it still looks slightly dull. And later blue and white porcelain solves this problem of color gradient. For more information,this website: http://www.ceramicssupply.net/

Copper red glaze of Changsha kiln in the Tang Dynasty, Jun red in the Song Dynasty, shiny red in the Ming Dynasty, peach red in the Qing Dynasty...Observing the history of Chinese porcelain, our level of making red porcelain has been improving continuously. However, red porcelain, a symbol of auspiciousness and happiness and Chinese people’s favorite color, has never been in the vision of people.

Fortunately, Yin Yanzheng, who studied chemical, developed Chinese red porcelain successfully in the 20th century. He found that the failure of firing red porcelain resulted from the intolerance to high temperature of red glaze. It will begin to break down and fade at 500℃ until the color disappear. Therefore, in order to fire Chinese red porcelain successfully, he spent nearly 20 years, tested more than 4000 kinds of formula, fired more than 10,000 pieces of samples and improved more than 20 kinds of kilns. Finally, he used the chemical solution to solve this eternal problem in the history of Chinese porcelain.

Chinese red porcelain not only has high practical value but also has high collection value with abundant types. As Yin Yanzheng said, "Chinese red porcelain belongs to China; red belongs to China; paintings on the porcelain are also traditional Chinese elements, so every piece of Chinese red porcelain contains authentic Chinese elements." It is this original flavor that makes Chinese red porcelain become the national gifts sent to international friends; it is this original flavor that makes Chinese red porcelain become the treasures of collectors.

If want to know more knowledge about porcelain, visit this website: http://www.ceramicssupply.net/

Enamel color porcelain is extremely expensive royal porcelain, occupying an important position in the history of porcelain development and ranking first in China's porcelain decoration arts. It has been royal porcelain for two hundred years after its birth. The number of this production is few but all of them are fine. They are using semi-finished products of Jingdezhen official kiln to be fired again in Beijing. Common people can hardly see them. Its production skills are extraordinary with distinctive characteristics of the times. The number of enamel color porcelain is very few so they are highly popular in the world collection. Enamel color porcelain was called cloisonne before. It was the craft rising in the Ming Dynasty, using blue as the background color on the copper tires, pinching copper wires and then adding red, yellow, blue, green, white and other glaze in the kiln. In Kangxi years of the Qing Dynasty, this method of "painting enamel" was used on porcelain. It absorbed the techniques of painting enamel on copper fountain and painted varieties of enamel color on the porcelain tires to form a new porcelain glaze. Ever since then, elegant enamel color appeared. The color materials of enamel color have ingredients that "making foreign things serve China ", of which there are chemical compositions "boron" and "arsenic" that are not contained in pastels; before Kangxi the yellow of porcelain is iron oxide, but the yellow of enamel color is antimony oxide; besides, enamel color use the golden red which are not discovered before Kangxi. All these chemical compositions show that the enamel color is introduced abroad. Because of this, enamel color porcelain is limited to the palace for the royal family from the beginning to the decline and is called "the luxury of common people". For more porcelain knowledge, you can go to this website:http://www.ceramicssupply.net/ceramics-knowledge/

China's porcelain is still charming now, because porcelain has been innovating with the development of the times. Jingdezhen porcelain also had a new innovation and breakthrough in Yuan Dynasty. Although it was not long for the Yuan Dynasty to rule China, the Yuan Dynasty was an innovation period from Jingdezhen's porcelain history. In this period, in addition to the production of blue and white porcelain, Jing porcelain had also succeeded in creating the famous blue and white porcelain.

Before Yuan Dynasty, porcelain decoration was monotonous. Porcelain is dominated by engraving, scratching and printing, the glaze is poorly decorated. Therefore, the sintered success of blue and white porcelain had created a new era of white porcelain painting and became an epoch-making event in China's porcelain history. With the appearance of blue and white porcelain, it developed rapidly with vigorous vitality, which made the landscape of porcelain production unprecedentedly prosperous. From Jingdezhen’s blue and white porcelains in Yuan Dynasty which are in museums, Jing porcelain process is quite mature and the quality had reached a high level. Jingdezhen porcelain workers in Yuan Dynasty also invented the enamel red porcelain, which was also a major innovation project. Enamel red porcelain is burned in the heat reduction flame, the decoration is red under the glaze and the burning difficulty is larger. In addition, Jingdezhen in Yuan Dynasty had been burned a new variety of red and green yellow porcelain, white glaze and copper red glaze, which made the porcelain decoration in Jingdezhen colorful. If you want to know more about it, you can view this website: www.ceramicssupply.net

It seems difficult for those people who study porcelain to make a comparative study about all the existing Ru porcelain because the stock of Ru porcelain is rare and there are less recognized standards about it. In addition, these so-called standard instruments are scattered in the top museums of the world. People can only carry on a series of unnecessary speculation, deduction, analogy from those few so-called standard instruments and the characteristics which can be seen at hand. However, the information obtained through this method is partial, one-sided, unrepresented and not universal. It is personal rather than the whole. Frankly, it’s not typical really. People made a personal and partial conclusion without universal study based on the information they have. In general, there are the following types: 1.Sesame sauce color support nails. 2. Incense tires. 3. White tire nails. Of course, there are two shapes of the support nails as sesame-shaped and round. However, some documents think that the support nails can’t be too large regardless of sesame-shaped or round nails since too large nails can be imitations. Even there is authority who thinks that if the support nails of Ru porcelain are not sesame-shaped, it is imitation goods. I was shocked about this conclusion. I don’t know where this arbitrary conclusion comes from, whether it’s derived from their judgment or other reasons. We can see that the standard instruments have been edited are not all sesame nails from the images of the standard Ru porcelain and all the authoritative books we have seen. Even if in the Qianlong's poems about pannikin, there are two that are not sesame branches in the five nails. There are also many similar situations. At the same time, there are round support nails of the whole package. Data have shown that the "Feng Huazun" of Taipei Palace Museum has larger round support nails compared with other porcelain. Therefore, the authoritative argument or the so-called definition and identification standards are difficult to gain a foothold. They are only made an infinite conclusion based on limited information at hand, which is unscientific and doesn’t meet the opinion of historical materialism and dialectical materialism. From the comparatively reliable information owned by myself and other friends, the following are my opinions: 1.Sauce color sesame support nails: this standard support nails of Ru porcelain can be seen more in incense burner, tripod, market and large wash objects, generally from five to seven, at most nine. In nearly twenty pieces of similar artifacts, they are basically standard sauce color sesame support nails. 2.Fragrant feathers bearing support nails: round, small as rapeseed, seen more in the artifacts with thin wall, smooth glaze, light body and fine workmanship. Such as bottles, wash, tripod, nai and so on. There are generally five support nails. Extremely fine and round. 3.White support nails: round, larger, like sesame or green bean. Seen more in the heavy artifacts with thick wall. And the artifacts can be defined as one between the sauce color sesame support nails and fragrant feathers bearing support nails. The workmanship is inconsistency. Do you want to know more interesting knowledge about porcelain, this website can be your choice www.ceramicssupply.net

Few of Song porcelain can enter the auction , especially for Ru porcelain. For Song porcelain mainly with the type of discs and bowls, the caliber is generally between 10-16 cm, rarely more than 20 cm and almost no "big device" wider than 30 cm. In the ancient porcelain collection world, people all admit that "Ru kiln is the best among the Song porcelain". As for the reasons, first, the firing time have to be mentioned, which is about 20 years. Tanzhai Biheng record the emergence of Ru kiln in the Southern Song Dynasty. The reason why Song Huizong supervise the manufacture of Ruzhou celadon is because he feel that "Dingzhou white porcelain can’t satisfy the need of our dynasty". Another argument is that the time to fire official Ru kiln is those 20 years between the first year of Song Zhezong and Chongning five years of Song Huizong. In the Northern Song Dynasty Xuanhe years, Xu Jing , who follow messengers to Korea, point that "Ruzhou new kiln, probably similar ... ... used by the royal court." in the book named Xuanhe Fengshi Korea Map. Although there is no conclusion about the existence of official Ru kiln in the academic world, the argument that its firing time is short and about 20 years is a consensus. But this short period of 20 years can’t be underestimated. "Sesame nail full of glaze firing by wrapped foot " created by official Ru kiln is different from glaze inside bubble arrangement of celadon system fired by Song Longquan and the Southern Song Dynasty official kiln, which produce another scene of Song celadon. It is understood that the temperature difference between top and bottom of Downdraft Kiln during the firing of Ru kiln is bigger. The kiln positions of the products are different and its color is also slightly different in the kiln which is 0.4 cubic kilometer. If the objects in the kiln are too large, the fineness of the same product will be different. The objects that is too large or too heavy also are not suitable for the nail firing because the "wrapped foot firing" is taken while firing Ru kiln. "Wrapped foot firing" is a method that using glaze to wrap the end of the foot without exposing tire, nail firing and the numbers of nails are singular: three or five. This also caused the characteristic of Ru porcelain. It is " nine will fail out of ten kilns" . "Nail firing" has been widely used from the pottery of Han Dynasty to the porcelain kiln of Tang Dynasty. It is commonly seen by people, but Ru kiln has its special place. The support nail of Ru kiln is small and sharp, using high quality clay high-temperature resistant. The layer of glaze is thinner, the trace is smaller . therefore, the branch marks stay in the finished device are extremely small. You can see this website: www.ceramicssupply.net In short, official Ru porcelain has become the fewest preserved ancient porcelain in the world. And the majority of the collections of Ru kiln in domestic common people is porcelain created by Linru kiln, Donggou kiln and other civil Ru kiln. Their value can’t compare with official Ru kiln. There is few official Ru kiln porcelain can be recognized by experts through repeated comparison and textual research of the information obtained by excavation.

As one of the five most famous kilns for thousands of years, Jun wares were made especially to meet the demand of the Song imperial court after imperial designs and have the most pure royal blood in China The wine set has sturdy body and thick glaze coat, and the glaze is smooth with luster. Both the interior and the rim of the mouth are glazed sky-blue. The surface is monochrome glaze yet still tactile, creating a minimalist and austere ceramic effect. If you are interested in porcelain produced by China, you can see this website: www.ceramicssupply.net

1. Celadon: In Chinese it is called “Qíng Cí” and written as “青瓷”. It is in bluish green color because of ferrous content. Owing to the poor reducing atmosphere technique, the color looked a bit yellowish or brown. However, “Qíng Cí” first appeared in the Eastern Han period and had been the main type of porcelain product in ancient China for a long time.

2. Pale Blue Porcelain: In Chinese it is called “Piǎo Cí” and written as “缥瓷”. It is bluish white color. It is an early celadon first appeared in the Jin Dynasty.

3. White Porcelain: In Chinese it is called “Bái Cí” and written as “白瓷”. It is a general term for porcelain wares with both a white inner body and a white glaze. It first appeared in the Northern Dynasty and matured in the Tang Dynasty.

4. Bluish White Porcelain: In Chinese it is called “Qīng Bái Cí” and written as “青白瓷”. It is porcelain in the color between blue and white. It is also called “shadow blue”—“Yǐng Qīng—影青”. It was an original product of Jingdezhen in the middle period of Northern Song.

5. Black Porcelain: In Chinese it is called “Hēi Cí” and written as “黑瓷”. It is a general term for porcelain with a black glaze. It first appeared in the Eastern Han period in Shangyu and Ningbo in the south. The north only began producing it after the Eastern Jin Period. http://www.ceramicssupply.net/article/History-of-Porcelain-Development.html

Jingdezhen’s porcelain is famous for its unique coloration and craftsmanship. But there are blooming and falling periods of flowers which is the same as Jing porcelain. The development of Jingdezhen’s porcelain is not smooth.

After the three dynasties of Kangxi, Yongzheng, Qianlong, Jingdezhen’s porcelain production began to go downhill from the peak. The output, quality, variety and shape of porcelain were obviously atrophied. Especially after the Opium War, the destruction of war, the instability of political situation , the invasion of foreign capital and the narrowing of the market all made the porcelain production severely disabled. In the period of the Public of China, the society was still unstable, the warlords were in melee and the people were destitute. During the Japanese invasion, Jingdezhen was repeatedly bombed by Japanese planes and the kilns were destroyed. There were only 33 porcelain kilns in the town, and the whole porcelain industry was at a low point. Until the eve of liberation, there was no improvement.

However, during this recession, Jing porcelain had made progress in manufacturing operations. It had been innovated in technology, which had appeared driving wheel, hand-shaking glazing machine, plaster mold casting slab, fog blower glaze, etc. In particular, the establishment of Jiangxi Porcelain Company in Jingdezhen, in the last two years of the Qing dynasty, marked the entry of Jingdezhen ceramic industry into an era of entrepreneurialism. Moreover, there are many innovations, including a series of technological innovations: trial mechanical production, decocting paper enamel, coal burning, etc. If you want to know more about it, you can view this website：www.ceramicssupply.net

China's porcelain is still charming now, because porcelain has been innovating with the development of the times. Jingdezhen porcelain also had a new innovation and breakthrough in Yuan Dynasty. Although it was not long for the Yuan Dynasty to rule China, the Yuan Dynasty was an innovation period from Jingdezhen's porcelain history. In this period, in addition to the production of blue and white porcelain, Jing porcelain had also succeeded in creating the famous blue and white porcelain. Before Yuan Dynasty, porcelain decoration was monotonous. Porcelain is dominated by engraving, scratching and printing, the glaze is poorly decorated. Therefore, the sintered success of blue and white porcelain had created a new era of white porcelain painting and became an epoch-making event in China's porcelain history. With the appearance of blue and white porcelain, it developed rapidly with vigorous vitality, which made the landscape of porcelain production unprecedentedly prosperous. From Jingdezhen’s blue and white porcelains in Yuan Dynasty which are in museums, Jing porcelain process is quite mature and the quality had reached a high level. Jingdezhen porcelain workers in Yuan Dynasty also invented the enamel red porcelain, which was also a major innovation project. Enamel red porcelain is burned in the heat reduction flame, the decoration is red under the glaze and the burning difficulty is larger. In addition, Jingdezhen in Yuan Dynasty had been burned a new variety of red and green yellow porcelain, white glaze and copper red glaze, which made the porcelain decoration in Jingdezhen colorful. If you want to know more about it, you can view this website: www.ceramicssupply.net

We all know that porcelain is a treasure of our cultural development with a long history. Since ancient times, people have been using porcelain dinnerware. Porcelain dinnerware has different shapes and colors, so it has been welcomed by a lot of consumers. But taking the safety of dinnerware and the taste of food into consideration, we should pay attention to the following tips when using porcelain dinnerware. •For those porcelain dinnerware containing the food, we should pay attention to their decoration which will touch the food. •For those porcelain dinnerware containing the acid food, we should try to choose those products which have less decoration patterns on the surface. •Pay attention to the pattern color. If they are not bright, then we can know the temperature didn’t meet the requirements while firing the patterns. Such porcelain dinnerware products often have higher lead and cadmium dissolution. •Pay special attention to those porcelain dinnerware on which we can use hand to wipe their patterns because this product has high lead and cadmium dissolution. •For those porcelain dinnerware that we have concerns, we can soak them in the vinegar for several hours. If we find there are significant color changes, we should abandon them. •Avoid those products that are decorated with metal, such as gold rims, silver edges, gold flower paper, metal wire and wire inserts when purchasing porcelain dinnerware which will use in microwave ovens. If you want to know more about ceramics knowledge, you can try this website: www.ceramicssupply.net

Jun porcelain has always been known as the natural furnace transmutation phenomenon, but how does it come into being? Here are some simple introductions:

The phenomenon of the furnace transmutation is mainly related to the specific production process:

1. Jun porcelain uses unique raw materials for production.

The mineral materials used in Jun porcelain are produced locally in Yuzhou. These ingredients are complex and contain various trace elements, which are of different colors and are the basis of the Jun porcelain kiln.

1. Jun porcelain has different fetal qualities.

The influence of the fetus on the ceramic kiln is mainly reflected in the color, opening and high temperature fluidity of the glaze. The amount of iron and titanium in the fetus affects the brightness of the glaze and the depth of the tone; the amount of silicon and aluminum has an important influence on the opening of the glaze; the amount of alkalinity affects the fluidity of the glaze.

1. Jun porcelain has a unique chemical composition of glaze.

A reasonable glaze composition is the basis of Jun porcelain kiln. The chemical composition of Jun glaze is analyzed scientifically. There are a dozen kinds of basic components, and it contains more than 40 kinds of trace elements. The appropriate proportion of each chemical composition is beneficial to the production of Jun glazed furnace transmutation.

1. Special processing of Jun glaze.

Glaze processing mainly refers to the thickness of glaze. The different thickness of glaze will produce different furnace transmutation effect.

1. Jun porcelain's unique glazing process.

The kiln change effect of glaze is different when the thickness of the glaze is different. Generally, when the glaze is thick, the effect of furnace transmutation is good, the color of the glaze is rich, the milky turbidity is high and rain road is easy to form. When the glaze is a little thin, the glaze changes little. In addition, different glazing methods will also produce different effects of furnace transmutation.

1. Jun porcelain has a unique firing technique.

Firing is the most critical process in the production of Jun porcelain, and each subtle change of the minor links in the process will affect the furnace transmutation effect of Jun porcelain. The different position of the products in the kiln, the density and the rarity of the kiln products, the quality of the fuel used in the kiln, etc., these factors will make Jun porcelain have different effects of furnace transmutation. If you want to know more about it, you can view this website: www.ceramicssupply.net