... structure 3.Bent frame, beautiful and durable Outside envelope Expander-cold retread General Specification: Booking No.810000ModelFTC- ... intensity of the machine is lower than the horizontal modelWalked along to complete the envelope operation,high efficiencySatisfy human- ... side. Foot switch, hands free.3Smooth operation, reducing the envelope damage.4Frame is bent (non-welded), beautiful and durable ...