Warna-coils coils (ppgi / ppgl coil) anu dumasar kana panas-dip lambar galvanized, panas-dip lambar galvanized, lambar elektro-galvanized, jsb Saatos pretreatment permukaan (degreasing kimiawi jeung perlakuan konversi kimia), hiji atawa sababaraha lapisan organik coatings dilarapkeun dina beungeut cai, lajeng A p ...
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