The coolwork refrigeration equipment Co.,Ltd is a comprehensive corporation that specialized in manufacturing and trading of refrigeration devices and parts.The company has passed ISO 9001 and CQC certification and the main products of the company include the solenoid valve,pressure controller.Variety of expansion valve,flow controller,filter drier,filter core, liquid indicator,oil and gas separator ,compressors,some manometer,thermostats,vacuum pump,and various tools as well.etc.,all...