Qingdao Ruchang is a professional manufacture and specialization marketing of mine reagents. The main product is collector and frother. 90% of our products are exported to the international market. We have established the cooperation relationship with BHP Billiton, CVRD and Rio Tinto, the three largest ore mines in the world. To ensure the products can meet the national standards, thereby ensuring to offer the high quality products in time, Ruchang use the advanced, safety and environmental-pr