Xuzhou Municipal Engineering Design Institute Co., Ltd.Jiangsu Sheng, China
Beijing Urban Construction Engineering Co., Ltd.Beijing Shi, China
Gebr. van Leeuwen Boringen BV
Fontana SRLBelluno, Italy
Zhejiang Zhongxin New Building Materials Co., Ltd.
Shanghai Xiandai Architecture Design Group Co., Ltd.Shanghai Shi, China
OKA Corp. Bhd.Perak, Malaysia
Allegro sro
TRANSSOLAR Energietechnik GmbHBaden-Wurttemberg, Germany
British Building & Engineering Appliances Plc
Nittobo Acoustic Engineering Co., Ltd.Tokyo-to, Japan
Ningbo HOBOS Energy Conservation & Technology Co., Ltd.Zhejiang Sheng, China