Shenzhen Boda Construction Group Co., Ltd.Guangdong Sheng, China
Duke & Co.
Shandong Huaxin Construction Engineering Group Co. Ltd.Shandong Sheng, China
Shandong Tai'an Construction Engineering Group Co. Ltd.
GRAUTHOFF Türengruppe GmbHNordrhein-Westfalen, Germany
Jiujiang Golden Phoenix Decoration Material Co., Ltd.Jiangxi Sheng, China
Advanced Quartz Material (Hangzhou) Co., Ltd.
Shanghai Tongwei Environmental Engineering Co. Ltd.
Hubei Guochuang Hi-tech Material Co., Ltd.Hubei Sheng, China
Nanjing Guohao Decoration Installation Engineering Co., Ltd.
Hualu Engineering & Technology Co., Ltd.
Exel Composites OyjFinland