Bokai cryogenic vacuum products, cryogenic pumps, chillers, helium compressors, etc., involved in several areas, such as vacuum coating, device manufacturing of integrated circuits and semiconductor, vacuum exhaust units, flat panel display manufacturing, scientific equipment and instruments (such as new materials research, superconductivity, condensed matter physics and surface physics research), environmental testing products, industrial gas processing and supply. Our products have stable performance and reasonable price, convenient sale services and flexible optional features, we can meet different customer’s needs