Nanjing Shujie Ya Cleaning Services facades dirt summary classification is broadly divided into the following categories: ● walls combined with wind and dust; ● against organisms from adhering to the wall of dust, paper leaves and other solid dirt; ● After high speed flight bumping into the wall, but stick to the wall after the death of insects, birds wreckage; ● due to air pollution in the external wall surface rust; ● containing organic and inorganic salts after rain washed leaving waterlines; professional causes of pollution foundation stone marble maintenance can be divided into four simple categories: First, organic substances such as cigarette stains, soy sauce stains, iodine stains cleaning staff job responsibilities, various detergents. Second, the metal stains such as rust, steel rust, rust and other lead. Third, oil, gasoline, oil, paint and so on. Fourth, the most prone to, but also the most difficult is to avoid water damage. Under normal circumstances water damage within a certain time can evaporate, but only in exceptional circumstances will not disappear cleaning water damage, and will long-term storage. Sometimes dye stains all substances (except liquid) itself does not have any effect on the stone, the water will be met only after the material to produce chemical changes staining. So water is the biggest enemy of the stone, the stone only to solve the problem of clogging before cleaning tool, otherwise you will often encounter some problems. For example in terms of: If the water in the reservoir rock, mineral salts in the stone will be because of exposure to moisture and chemical action, when the crystal gradually become larger, it will make the stone surface burst open and precipitated crystals. The best way is to prevent the penetration of moisture, so water vapor exhaled. Procter & Gamble | Shujie Ya cleaning (certified) | cleaning by Nanjing Shujie Ya Cleaning Services Limited. Nanjing Shujie Ya Cleaning Services Limited (www.sjy880.cn) (www.) Is Nanjing, property management leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shujie Ya leader in cleaning staff warmly welcome all inquiries negotiations to create a better future Shujie Ya cleaning. You can also access (www. / Supply_details_41168975.html), for more information about the company.