Chongqing Silian special equipment material Co., Ltd. was founded in 2012, which is a wholly-owned subsidiary of China Silian Instrument Group Co., Ltd. Since 1965, he has been engaged in sapphire processing and optical instrument production. Long term focus on large-scale sapphire dome and infrared material processing. Our company is one of the manufacturers which can produce large size, high straightness sapphire less than in China. The main products cover the ball cover type with a diameter of 50-300 mm, and the plane lens type with a diameter of 50-300 mm. The company advocates "professional, pragmatic, efficient and innovative" enterprise spirit, with a good internal mechanism. Excellent working environment and good incentive mechanism attract a group of talents with high quality, high level and high efficiency. We have perfect technical R & D force and mature after-sales service team. Our tenet is: "exchange your trust and support with service and sincerity, mutual benefit, create win-win together!" Our company is willing to cooperate wholeheartedly with colleagues at home and abroad to create the future!