Room 305, No. 4025, Nanfeng Road, Fengxian District, Shanghai, China (Mainland)

HAOYU has offices in Shanghai, China.Our company's main fire protection products, Such as Fire sprinkler Rain shower valve,alarm valve, etc. We also sell gate valve, butterfly valve,check val...

level mornitoring,alarm system,hydraulic valve remote control,fire security lifesaving,anti-pollution,sensor,meter,transmitter,automation equipment...