Dear Sir: 
    We are Boya (Tianjin) International Ltd, which is mainly dealing in the impport and export of chemical series, including   Sodium Sulphide /Calcium Carbide /Ammonium Chloride /Humic Acid /Barium chloride /Dicyandiamide /Barium Sulfate /Oxalic Acid /Sodium Hydroxide /Sodium Hydrosulfide /Chromium Sulphate /Sodium metabisulfite /Sodium thiosulfate
    We have our own manufacture base, and only co-operate with state-owned enterprises and famous factories for our long and regular suppliers ,thus we can make sure the quality and shipping date of the goods for our customers . 
    Moreover, We can offer above items with   different description,  also can produce them according to our customers' requirement. The quality of our products will be the first-class, with good credit and reasonable...