Shanghai Grunwl Smart Control Group is with 20 years of manufacturing pump inverters. We found with Shanghai Grunwl, Zhejiang Grunwl and other three technical research bases.Grunwl has formed a set of series products
with independent intellectual property rights, intelligent water control technology, with multiple pumps zero water hammer control technology, digital integrated intelligent remote technology, multiple pumps zero fatigue control technology, We have also successfully passed the CE, ISO9001-2015 , 14000 environmental management system, 45001 occupational health and safety management system and many other testing certifications.