... : a. the door piece the special craft processing molding width extra-large?(130mm),the concave-convex trenchant line is clear.which increased ... and hookl,adding in the wind ,under the situation-super-large can tightly.spread in special guide rail make door does ... more beautiful,solid,durable.more suitable for large span and large area,hige standards of large factory,warehouse. d.door bottom and guide ...