Zhejiang Siwei New Material Technology Co., Ltd. located in Kaihua County, the source of Qiantang River., is ae high-tech enterprise integrating R&D, production, sales and servic. We specialized in the production lapping,polishing and grinding carrier including STAR WHEEL, polishing template, correction wheel, center wheel etc.which are widely used in semiconductor, sapphire, optical glass window, crystal, ceramics, piezoelectric crystal, quartz chip, display screen, automobile and other industr