Craft Engineering ISO 20' containerized cylinder filling plant is completely mounted within a container that’s been customized to serve as a technical work space, which is divided into two areas. There are three doors for access along with a digital control panel display. The container has a metallic roof that comes apart, inside lighting as well as outside lighting, and the air conditioning system. Unit ships with special primer pain and enamel finish that makes the container excellent at repelling rain, dust, theft, etc. The CPO units can be operated even when the doors are closed. The containers are designed to be used in the outside elements and the ventilation is designed to be efficient no matter what the moisture or environmental temperature. It is similar to other CPO 20’ containers and facilitates the transportation of the plant and equipment.