Tianjin Minle Chemical Import & Export Co. Ltd.,was built in 2004 and it is a professional manufacturer of chrome based chemicals ,water treatment and other chemical materials such as Chrome oxide green,Chromic Acid ,Sodium Bichromate ,Potassium Bichromate ,Basic Chromium Sulphate, Sodium sulphide ,Sodium Hydrosulphide, Aluminium Hydroxide and Aluminum sulphate and so on located in Eco-industrial park ,Minle county,Zhangye city, GanSu province.With over 30 years of experience,Gansu Jinshi has become a market leader in the production, sales and technical support on the field of chrome and other chemicals. We have been certified to ISO 9000 of quality system and ISO 14000 environmental management system.