Mingji Baitie Environmental Protection Engineering Department

Yixing Baitie Buxiu Environmental Protection Tongfeng Engineering

Rongfa Air Conditioning Baitie Engineering

Xuhui Building Materials

Kaisheng Environmental Protection Baitie Tongfeng Equipment Blower Fenggui Environmental Protection Air-conditioner Paifeng Pipeline Paiyan Pipeline Engineering

Shunfa Baitie Tongfeng Environmental Protection Equipment Engineering Youyan Pipeline Factory Paiqi (Daojiao Branch)