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Domestic insulation strips-identification of insulation strips
Domestic insulation strips-identification of insulation strips Exterior. The nylon heat insulation strip is black matte color, and the whole is smooth and flat, no shrinkage, no looseness, no scratches and mold extrusion marks, and you can see a special luster of minerals (glass fiber distribution) when you look closely at the light. The heat insulation strip head There is no parting line mark on the end surface; other imported or domestic nylon heat insulation strips are gray-black or dark black, without any trademark signs, and the strips are relatively rough. The mold extrusion marks and the parting line marks on the head end face are obviously visible, and there is shrinkage. The holes are loose; while the PVC heat insulation strip is bright black, without any trademark logo, the strip body is rough, the mold extrusion traces are obviously visible, there are a lot of shrinkage holes and loose, and the head size is asymmetrical and irregular.
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