Stretch film is aluminum and stainless steel sheet support, no bonding relationship, armor, shield body material: three anti-cloth, nylon fabric, flame retardant fabric outside, high temperature cloth, plastic cloth, rubber composite fabric and so on. Armor-type shield is designed to withstand shock and fiery debris caused +900 ℃ temperature. Fitted on each surface of the steel armor off, it has this function. They can also be fixed to the swing. Swinging armor shields applied as follows: When the protective cover in a compressed state, forcing the armor rotated outward 90 °, fixed armor shields can be applied as follows: When the protective cover in a compressed state, there is no obstacle so that the helmet can be kept in their original status. As preset armor good adhesion between the protective layer shields against a lot of dust, sand foam, iron and so on. Widely used in grinding, precision instruments, measuring, CNC machine tools and other machinery in the field of rails, beams, columns.