Disadvantages: blisteringcause① The paint itself is poor in water resistance.②The thinner is unreasonably selected and volatilizes too fast.③There is oil and water on the surface of the coated object.④ The ambient temperature is too high, the humi…

Disadvantages: grainingcause①The layering system is not good.② Irregular coating.③ There are granular items in the seasoning, so use it without filtering.④The thinner material is not matched.⑤The amount of curing agent added is too much or the mi…

Disadvantages: dont polish sticky sandpapercause① Improper frosting method.②The air humidity is too high.③The amount of curing agent is not enough, and there is remaining resin that did not participate in the reaction.④The type of resin is differe…