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Proses chwythu poteli PET
Poteli PET wedi'u haddasu wedi'u cymysgu â naffthalad polyethylen (PEN) neu boteli cyfansawdd o PET a polyarylad thermoplastig yw poteli diod. Fe'u dosbarthir fel poteli poeth a gallant wrthsefyll gwres uwchlaw 85 ° C; poteli dŵr yw poteli oer, dim gofynion ar gyfer gwres...Darllen mwy
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