Purchase Department:
Mr. Hu +86-713-8556010
Securities Affairs Department:
Ms. Shi +86-713-8556012
               +86-15997330949
Sales Department:
Ms. Wan +86-713-8556006
                 +86-15377143039
E-mail: yxl@yeschem.com
              sale@yeschem.com(Sales)
Web: www.yeschem.com