Shanghai Bojing Chemcail co.,ltd is a professional chemical company in shanghai establish more than 13 years.We have our own factory for produce products and also trading cheimcal products. Our products including: 1.Polypeptide 2.Steriod powder 3.Synthetic chemicals 4.Normal API chemical items 5.Pharmaceutical intermediates We promise good quality with better price. Welcome email when you have any purchase plan.