1.Material:plastic,copper,stainless. 2.FOB price:$1.0~$3.0 per piece. 3.Order:10000000 pieces per year. 4.License:UL,ROHS. This type thermostat is mainly used on the water heater, which can control the temperature of your equipment ,its temperature range is from 30~300C. WY-E model water heater thermostat