... Co.,LtdWe reseach,development ,and manufacture sectional garage door, industrial door, sliding folding door, rolling door, Door Accessories, Door opener(Motor),Windows ... any finger injury when door open and close.4.Door panel -- Double galvanised steel with the thickness 0.326mm or 0 ... .376mm and PU foam infiled.The whole panel thickness 40mm or 50mm5.Surface-- Wood grain and square or ...