MINGDER minerals ore sorting machinery, CCD color sorter for mining processing industry(qurtz, calcite, feldspars etc) --Hefei Mingde Optoelectronic Technology CO., LTD www.hefeimd.com/en Mob/whatsapp: 008613966725592 Skype: dianahongsmile Email: dianahong@hefeimd.com Tel: 0086-551-62578095