Ihe mkpuchi agba agba (ppgi / ppgl coil) dabere na mpempe akwụkwọ na-ekpo ọkụ na-ekpo ọkụ, mpempe akwụkwọ galvanized na-ekpo ọkụ, mpempe akwụkwọ electro-galvanized, wdg. Mgbe elu pretreatment (chemical degenreasing na chemical ntughari ọgwụgwọ), otu ma ọ bụ ọtụtụ n'ígwé nke organic. A na-etinye mkpuchi n'elu, wee A p ...
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