Profile: Xuzhou YY Electronics Technology Co., Ltd. Produces products for measuring and controlling the temperature used in refrigerant and air conditioner industry. Our product line includes micro-computer temperature controller, temperature panel, refrigerant unit electric control box, digital thermometer / hygrometer and gas leak detector. Our ATC-700 humidity controller is used in aquarium and pet industry. Our ATC-400 aquarium timing fenyserature controller feature panel of 144x36x21 (mm) sizes. Our MCTC-100 milk can temperature controller is used to control compressor, mixer and milk pump with password protection.