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Koutim RAL Kouvwi Steel Coil /Color Kouvwi Fèy
Kouvwi bobin koulè a kouvwi ak youn oswa plis kouch penti likid pa metòd kouch woulo liv apre pretretman sifas (degresaj ak tretman chimik) sou substra a woule cho, substra galvanised, substrate zenk aluminize, substra frèt woule, substrate fèblan, ak substra asye pur. Apre boulanjri ak refwadisman, fòme pa woule limyè.
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