
Naohiro Yoshida,

Guangzhou Hongsen Material Co. Ltd.

Sandvik Steel AB

CHENGDU YACHAO BUILDING MATERIAL CO.,LTD.

Foshan Shunzhi Environmental Protection Technology Co., Ltd.

Yuyao Qingda Machinery Co., Ltd.

Hainan Hongjihui Construction Engineering Co., Ltd.

Tatsuo Taniguchi

Lehtikoski Development Oy

Suzhou Haizhong Aviation Parts Co. Ltd.

Drillflex

Messer Polska Sp zoo