Koil berlapis warna adalah produk yang terbuat dari lembaran galvanis hot-dip, lembar seng beraluminium hot-dip, lembar electro-galvanis, dll. Sebagai substrat, yang dilapisi dengan satu atau beberapa lapisan cat organik setelah perawatan permukaan (perawatan kimia degreasing dan konversi kimia), dan kemudian matang dan sembuh. Karena lapisan berbagai warna koil baja berwarna cat organik dan namanya, disebut sebagai koil lapis warna.
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