Shanghai Yuwang Precision Ceramic Co.,Ltd. is a chemical vapor deposit firm which owned R&D and produce. Mainly products are Pyrolytic Boron Nitride (PBN), Pyrolytic Graphite (PG) and Silicon Carbon Coating on graphite (SIC coating),which are kind of high temperature ceramic material. The seldom-advanced countries master the high technique in the world. The firm are in possession of the knowledge right, patent and specialty technique, and also provided advanced products in the domestic and oversea market. Yuwang company keeps ahead in the domestic on sales of products, graphic design, technique skill and devices.