There are electric and spring system available,matching 55/63/78etc.tube ,height up to 6 meters; Widely used inengineering projects.Up to 6 meters;widely used inengineering projects.
Fastener self-locking installation fixed seat;
Button-type side rail three-piece side rail;
Electric operating system;
Use 63 Thick Tube, width less than 3.8 meters, height up to 4 meters;
widely used inengineering projects.
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