Donghai Jiurui Quartz Products Co., Ltd. was established in 2010 in Donghai County, Jiangsu Province—a central hub of silica mining and processing in China. Certified under ISO 9001 and ISO 14001, the company manufactures high-purity fused quartz and silica glass instruments capable of continuous operation at temperatures up to 1,050°C and short-term thermal thresholds of 1,200°C.
Jiurui Quartz controls material purity up to 99.998% SiO₂ and processes standard and optical grades conforming to JGS1, JGS2 (deep UV), and JGS3 (infrared) criteria. Its processing facility carries out precision flame fabrication, thermal forming, mechanical CNC cutting, drilling, slotting, precision grinding, and optical lapping.