The screw compressor units of CEGT adopt imported compressors from abroad. They are mainly applied in the refrigeration process and oil-injected screw process gas compression field for large-scale chemical equipment and some special requirement process equipment. They are suitable for any application that requires refrigeration low-temperature solutions and process gas pressure-increasing solutions. For refrigeration systems, the applicable refrigeration temperature ranges from +90℃ to -110℃. For process gases, they are suitable for the compression of alkanes and pure special gases.