Yishin is an overall solution supplier to calcium carbonate powder new materials. The company has two marble mines with a high reputation “the whitest in the skyline”. Natural whiteness is above 96 degree and calcium carbonate above 99%. Ore reserve above 100 million MT. Annual production capacity is above 1.1 million MT. Production is more stable after three times homogenization and intelligent production. “TW” brand products system are the best filling material for paints, plastics, paper-making, rubber, cable & wire, and glue industries etc.