廣告牌長時間不清洗，容易非常的臟，臟的甚都看不清廣告牌上面的字體，表達的意思，所以適當的清洗廣告牌會對廣告牌的效益有好處。
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.
要想對廣告牌進行清洗要先確定好廣告牌的材質：不同的燈箱面臨的材質清洗方式和所用的藥劑是不一樣的，因此我們要知道需要清洗的廣告牌是用什么材料做的，是有機塑料片，還是廣告牌布等，都要區分清楚。
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.
要選擇好清潔劑：根據廣告牌的材質選取清潔劑，一般的廣告牌的清潔劑有全能清潔水、中性清潔劑、明亮玻璃清潔劑等。
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.
選擇好使用工具：高空作業系列工具、梯架、高壓射流、軟質板刷、噴壺、抹布、海綿、百潔布等；具體的操作步驟：
Choose good tools: aerial operation series tools, ladder, high pressure jet, soft plate brush, spout, rag, sponge, cleaning cloth, etc.; specific operation steps:
(1)先觀察廣告牌保養物已經使用的年代及材質，若發現廣告布已經老化或風化已經不適合再做清洗，而需要更換時應告知廣告主；
(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)在局部地方做小范圍清洗實驗，若無反作用即可正常操作，若發現變色或褪色等應立即停止清洗更換清潔劑；
(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)合理選配藥劑及輔助工具。
(3) Rational selection of reagents and auxiliary tools.
