Sinro Group was founded in 1986, having almost 30 years rich experience on HVAC control products like motorized zone valves/ball vales/globe valves/flow balancing valves, damper actuators, thermostats and flow switches, etc.We have 3 owned factories of 120,000m2 with ISO9001 certificate, 2 experimental bases and a professional engineers team to be our strong backup, as well as a high qualified sales team to follow up well all clients accounts.Most of our products have acquired the international certifications like CE, UL, CSA, what we pursue is to supply users the qualified products with better application and with the most competitive price we can do, and we always try best to offer clients the satisfied and simplified solutions.contact: Melissa Huang, doc2&＃39;@&＃39;sinro.com