Mildewy become angry: This kind of question happens in damp paint surface more, if lunt condenses in glass and metallic surface,constant meeting produces the blotch of palm black.

• 发霉变色：这种问题多发生在潮湿的油漆表面，如水汽凝聚在玻璃和金属表面时常会产生棕黑色的污斑。