Mingder Mineral stone color sorter machine, ccd color sorting machine, can be used for separating various minerals ores(Calcite, cacium, carbonate, potash feldspars, quartz etc) in different sizes with your requirements--Hefei Mingde Optoelectonic Technology CO., LTD www.hefeimd.com/en Mobile/whatsapp: 008613966725592 Skype: dianahongsmile Tel: 0086-551-62578095 Email: dianahong@hefeimd.com