性高湖久久久久久久久AAAAA,18精品久久久无码午夜福利,国产精品成人va在线观看,男女啪啪做爰高潮全过长

Jinsheng Ceramics has a first-class talent team with rich experience in research and development and industrialization of ceramic materials and independent intellectual property rights. Since its establishment, it has been adhering to the purpose of developing high-end ceramics and equipped with advanced production and testing equipment such as hot isostatic pressing and ultra-precision testing. Established a complete R&D, production and quality assurance system from powder preparation, molding and sintering, precision machining to quality inspection, especially in the field of high-performance silicon nitride ceramic bearing balls. In 2018, it was mass-produced to meet ASTM F2094 Class I standard high fatigue life, high strength, high reliability silicon nitride ceramic balls, and successfully entered the high-end bearing market.In the future, Jinsheng Ceramic will take the industrial layout of Sinocera as its development goal, and continue to focus on the research and development and industrialization of high-end ceramic materials in response to the difficulties and pain points in the ceramic field, continuously improve technology and quality capabilities, and rapidly promote China's advanced ceramic industry development of.