... all solvent-based coating system (such as lacquer, PU wood finish, NC paint, polyester paint wood, plastic paint, paint, ink, etc.), it can ... shrinkage cavity ( The most typical property):Substrate pollution, paint system unbalance, all can lead to appear shrinkage cavity.For vacuum plating primer ... process; typical amount of 0.05% -0.5%, You need to use a suitable solvent, such as alcohols or ...