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Taiyuan Xinyuan Tech Center of North University of China: Welcome to buy refractometer, lensmeter, lens edger, chart projector, optometry unit for sale here from professional manufacturers in China. ... Read more

Dalian Shungji Technology Industry Co., Ltd: With graphite material experts + vacuum furnace design team, SHJ focuses on the research, production and supply of graphite, carbon material for vacuum ... Read more

Dalian Shungji Technology Industry Co., Ltd: With graphite material experts + vacuum furnace design team, SHJ focuses on the research, production and supply of graphite, carbon material for vacuum ... Read more