Jiangsu Jingrui Quartz Industry D&R Institute Co., Ltd. is located in the Crystal-Center of China ?Lianyungang. We are a company well integrated with R&D, manufacturing, sales and marketing in the silicon resources field. We have 6 standard plants and 1 super clean working plant. We have advanced testing equipment and have separate R&D office specialize in the research of high purity and super fine silica products. We also cooperate with Tsinghua University & USTC in the research of quartz ...