Tianjin Jingdong Hongli Resource Co.Ltd is one of the biggest chmecial material manufacturers in tianjin. The company is founded in 1995 with almost 150 workers. The company's main product are fertilizers pesticides and agrochemicals. The most salabale product of our company in the world market is Magnesium Sulphate HEPTA(MgSO4.7H2O). Detailed Product Description Features: 1) 95%min purity 2) Appearance: white crystal 3) Used in food, fertilizer, additive, and for industry and agriculture applications Currency: USD Unit Price: Quantity: Delivery: