| Tianjin Huayu Quantification Technology Co., Ltd. |
| TEL： （022）27059901/26571808 |
| FAX： 022-26569618 |
Address： 5/F Yunhan Buliding,185Qinjian Road,Hongqiao District |
| GUANGZHOU:(branch company) |
| TEL： 020-38628887 |
| FAX： 020-38628886 |
Address： S10-1802FuLiTianLangMingJu,TianheDistrict,GuangZhou |