The AS5 series air treatment unit product manual introduces the features and characteristics of this series of products in detail, including air treatment unit 2 connectors, air treatment unit 3 connectors, pressure regulators, filter-regulators, filters, pre-filters, precision filters, activated carbon filters, standard spray lubricators, oil units, electric oil units with priority switches, oil units, pneumatic oil units with priority switches, two-way three-way solenoid valves, etc.