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Handmade polyurethane sandwich panel
»Polyurethane sandwich panel composite panel has low thermal conductivity and good thermal insulation performance, and it is currently a relatively good insulation material. The board is beautiful, easy to install, has a certain fire resistance, is non-toxic and tasteless, and has a certain waterproof and moisture-proof performance.
https://www.rongstarcleanroom.com/product/cleanroom-wall-panel-system/handmade-polyurethane-sandwich-panel.html
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