1

China Certification & Inspection Group Co., Ltd.

Chen Hong

010-84603658

Gu Chen

010-84603548

2

CMST Shanghai Material Inspection Co., Ltd.

Zhu Baozhu

021-36583602

13311671069

Song Yihua

021-36583613

13585515287

3

SGS-CSTC Standards Technical Services Co. Ltd.

Xu Jun

021-61402530

13801807392

4

China National Construction and Steel Materials Quality Supervision and Inspection Center

Liu Dong

010-82227916

13810813900