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• Our ShanghAI direction is a company with 20 years of processing production crystal of high-tech enterprises, is the earliest r&d artificial sapphire production processing in one company, we specialize in precision crystal of production, processing, and it possesses several national patents of company, long-term with many doMEStic and foreign high-tech enterprise cooperation. Our company owns many sets of imported from Germany ultra-precision machine tool, and various import size measurement instrument, welcome the domestic and foreign enterprises, the businessman, came to negotiate. Telephone: w - 86-59514878 Fax: w - 86-59514053 The sales manager mobile: 13801843752 square E-mail: 450714364@qq.com