The material of plastic is made by import the colored engineering plastics raw material,the low density polyethylene increase the anti-ultraviolet ray stabilizer and the static electricity make the surface is smooth, does not distort. The weathering resistance is good and it's not easy to fade. the platform, a step ladder for the steel and iron use high strength punch holes steel plate. bridge piece screw uses the stainless steel screw, buckles use the aluminum alloy, safe reliable, the structure smooth, reliable, is not rusty.
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