Mingder minerals color sorting machinery for domestic and overseas mining process. ore color sorter for sorting barite, boron minerals, chromite, feldspars, magnesite, perlite and pumice etc - Hefei Mingde Optoelectronic Technology CO., LTD www.hefeimd.com/en Cell/whatsapp: 008613966725592 Skype: dianahongsmile Email: dianahong@hefeimd.com Tel: 0086-551-62578095