Specification:Fangyuan is able to develop and produce thermostat assemblies that are meant to be applied in the engine cooling system, used for controlling, and used to adjust the temperature of the automotive engine, ensuring that the engine works in the optimal range. There are three options for the parts: steel pistons inside elastomeric tubing, steel pistons lifting up through the membrane, and steel pistons alone. It is in accordance with VW etc.OEM manufacturers’ technical requirements.