If cold rolling is laminose,drop 2. 26 % , plating zine plate drops 1, 83 % , plating latten drops 3. 57 % , cold rolling silicon steel drops 14. 24 % . 2.

• 如冷轧薄板下降2．26%25，镀锌板下降1，83%25，镀锡板下降3．57%25，冷轧硅钢下降14．24%25。