This machine apply for 1. As general purpose shelter Pneumatic tools, control valve, common instruments, precisions and blast. 2. Substitute of oil-free compressor Prescision industry, precision instruments, textile, chemical fiber technology, electronic industry, common coating. 3. Handing in oil-free and peculiar smell-free treatment method Hospital, breathing, transport, pharmaceutica, mixing, aseptic packaging, food industry. 4. Handing in extra-low dew-point Chemical analysis, laboratory, food, breathing, super drying, brewing industry, high-voltage insulation, powder storage, opticallens, microelectronic chip manufacturing, static coating and drying.