Shanghai Penguin Refrigeration Equipment Co.,Ltd. is an enterprise specializing in the research development and production of refrigeration compressors and condensing units. Its main products are semi-hermetic piston refrigeration compressors and condensing units,semi-hermetic screw refrigeration compressors and condensing units and fully enclosed scroll refrigeration compressors. Machines and units are widely used in large,medium and small cold storages such as refrigeration and freezing in the chemical industry,oil