1.we are professional in producing this pumps for 25 years. 2.our products have CE certification. Application:CHL,CHLK and CHLF(T) type pump are mainly used in industrial field:Air-conditioning system,cooling system,industrial cleaning,water treatment (water purification),Aquiculture,Fertilizing/metering system,Environmental application,other special applications.technical data:Model:CHL16- ...