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 price, You can refer to http://www.boya-chemical.com/for more about us, if you are interested in our series, pls contact by :helen--zhang@hotmail.com
   We are sure we can afford them in time and we will do our utmost to meet our customers, sincerely hope we can conclude business with each other!
B.W.
Helen