Italy Rai Beverly/Japan Kobelco/Taiwan Fusheng and Han Zhong semi-hermetic screw compressors, and imported series twin screw compressors. Twin screw 5:6 gear ratio and advanced linear design, energy saving and high efficiency. High performance valve capacity control, achieving classification or stepless controllable. Balance design, running a statically stable. Moving parts strictly processed, special exhaust oil balanced block design, repair cycle is long, trouble-free operation for more than 40,000 hours. High efficiency oil separator, exhaust out of the oil quantity is less than 1.5%, effectively improve the condenser and heat, more energy-efficient and durable