DLL series of Seal Chiller are developed by our company on the basis of DLSB series of low temp.. The continuous and fast heat conversion between circulating medium and refrigerant is realized through plate heat exchanger. Compared with the previous refrigerant into the coil recooling tank circulating medium recirculation to meet the needs of rapid refrigeration users.The liquid storage tank of the chiller does not participate in refrigeration. With self-diagnosis function, overload protection, compressor pressure gauge, overload relay, emergency shutdown switch device, further ensure the safety of operation.