Dongguan Jinyan precision grinding machinery manufacturing Co., Ltd. (hereinafter referred to as kizi) team took part in the 2017 Shanghai International powder metallurgy, cemented carbide and advanced ceramics exhibition (exhibition No.: b835) in Shanghai Everbright Convention and Exhibition Center from April 26 to 28, 2017, with a complete set of ceramic / powder metallurgy Mobile phone back cover / middle frame grinding and polishing solutions.