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