Beijing Aosiyuan Science & Technology Co., Ltd.

  TEL:+86 10 62975196 / 82782844 / 62980879

  FAX:+86 10 62975196 ext. 805

  E-mail:asy@bjasy.com

  AD:Rm417,Overseas Students Pioneer Park, No29 Shangdi East Road, Haidian District,Beijing,China  

  POST:100085

  MSN:eltj@163.com