
Sang-won Park

Allen KKTokyo-to, Japan

Nantong Prefabricated Building and Intelligent Structure Research Institute

Shenyang Zhongchen Steel Structure Engineering Co.,Ltd.Liaoning Sheng, China

Hong Kong Le Mi Co., Ltd

Shandong Binao Wire and Cable Co., Ltd.

WTB Group Ltd.Bretagne, France

Suzhou Industrial Park Tianyida Chemical Technology Co., Ltd.

Kent Catalytic Materials Co., Ltd.

Epoch Co. Ltd.Tokyo-to, Japan

Global Windmill & Supply LLC

Wuyang New Wide and Thick Steel Plate Co., Ltd.