Weifang longwei industrial co., ltd is located in Weifang Binhai Economic Development Zone Industrial Park, Shandong provice. It covers 200 square kilometers. Its three production bases are salt manufacturing, aquatic products and chemicals. It introduces advanced production process and equipment, produces and sales ocean chemical products. The main products are Calcium chloride, sodium sulphate, sodium bromide, calcium bromide, N-propyl bromide, potassium bromide, ammonium bromide, zinc ...