At present extensive use clean method is ultraviolet( UV) light clean, on one hand it can avoid pollution because of use organic solvent, meanwhile can abbreviate clean process.

• 目前国外广泛使用的清洗方法是紫外(V)清洗，它一方面能避免由于使用有机溶剂造成的污染，同时能够将清洗过程缩短。