Import: Schneider, Siemens
Domestic: Delta, ENVADA (single loop PID control)
Import: Siemens, Danfoss, Honeywell,
Domestic: Tidel, Ector
Import: Vector, Siemens
Domestic: Taixing Dahua
Import: Danfoss
Domestic: SHKVC, Tianjin First Valve Factory, BNSV, Shanghai Shine-Valve
Import: Danfoss
Domestic: SHKVC, Tianjin First Valve Factory, BNSV, Shanghai Shine-Valve
Import: Danfoss, Schneider, ABB, Siemens,
Domestic: INVT
Import : Kamstrup, Siemens
Domestic: Tangshan Huizhong, Daliang Watsonda
Domestic:
Domestic: SHKVC, Tianjin First Valve Factory, BNSV, Shanghai Shine-Valve
Import: KMC, Danfoss, Bonn
Domestic: Nanjing Jiangu, Shenyang Tyco, Hebei Bohr
Import: Grundfos, Vela
Domestic: Nan Fang, KAIQUAN, Shanghai Liancheng, Shanghai Oriental