The company is located in the beautiful and fertile Crystal city DongHai County which holds a large store of high quality quartz mine (the content of Si is 99.98%), Lianyungang City, Jiangsu Province, China. The crystal coffin of Chinese previous chairman Mao Zedong which is now in Beijing Chairman Mao&＃039;s Memorial Hall was made of quartz mined from here. We have devoted ourselves to studying and developing high quality quartz products since 1990&＃039;s when our corporation was set up. From then on, we have persisted in taking our core value of "high quality, development, and innovation", and constantly improved technology and updated equipment. Our products have reached domestic top-ranking quality standard.