广告牌长时间不清洗，容易非常的脏，脏的甚都看不清广告牌上面的字体，表达的意思，所以适当的清洗广告牌会对广告牌的效益有好处。
If the billboard is not cleaned for a long time, it is easy to be very dirty. If it is dirty, you can't even see the font on the billboard clearly to express the meaning. Therefore, proper cleaning of the billboard will be beneficial to the benefit of the billboard.
要想对广告牌进行清洗要先确定好广告牌的材质：不同的灯箱面临的材质清洗方式和所用的药剂是不一样的，因此我们要知道需要清洗的广告牌是用什么材料做的，是有机塑料片，还是广告牌布等，都要区分清楚。
In order to clean the billboard, we must first determine the material of the billboard: different light boxes are faced with different material cleaning methods and chemicals, so we must first know what material the billboard is made of, whether it is organic plastic sheet or billboard cloth, etc.
要选择好清洁剂：根据广告牌的材质选取清洁剂，一般的广告牌的清洁剂有全能清洁水、中性清洁剂、明亮玻璃清洁剂等。
To choose a good Cleaner: according to the billboard material selection cleaner, general billboard cleaner has all-round clean water, neutral cleaner, bright glass cleaner, etc.
选择好使用工具：高空作业系列工具、梯架、高压射流、软质板刷、喷壶、抹布、海绵、百洁布等；具体的操作步骤：
Choose good tools: aerial operation series tools, ladder, high pressure jet, soft plate brush, spout, rag, sponge, cleaning cloth, etc.; specific operation steps:
(1)先观察广告牌保养物已经使用的年代及材质，若发现广告布已经老化或风化已经不适合再做清洗，而需要更换时应告知广告主；
(1) First, observe the age and material of the maintenance materials on the billboard. If it is found that the advertising cloth has aged or weathered and is not suitable for cleaning, inform the advertiser when it needs to be replaced;
(2)在局部地方做小范围清洗实验，若无反作用即可正常操作，若发现变色或褪色等应立即停止清洗更换清洁剂；
(2) If there is no reaction, it can operate normally. If discoloration or fading is found, it should stop cleaning immediately and replace the cleaner;
(3)合理选配药剂及辅助工具。
(3) Rational selection of reagents and auxiliary tools.
