
NIPPON RIETEC CO., LTD.Tokyo, Japan

Hankuk Eng Development Co. Ltd.

National Mining UniversityUkraine

CAMUS ENGINEERING & CONSTRUCTION, Inc.GY, KR

FiberCore Europe BVZuid-Holland, The Netherlands

GEO (Denmark)

Kyowa Electronic Instruments Co., Ltd.

DoArm Engineering Co., Ltd.

Takahata Co. Ltd.

Simpson Strong-Tie Co., Inc.California, United States

Shimizu Corp.Tokyo-to, Japan

Chang Xin Ying Zao Co. Ltd.