Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, is one of the qualification place in Henan Province since the first detection through examination of business. Business in the Pile qualification qualification, the qualification grade steel, a qualified indoor environment, building energy efficiency testing, subject testing, materials testing, curtain detection, detection of roads and bridges, air defense projects to detect a number of test qualification and testing laboratories. Material in the course, will be the role of various factors in the natural environment, and its performance is gradually reduced, or even destroyed, these damaging effects can be divided into physical, chemical, and biological effects and other effects. Physical effects include dry and wet changes, temperature changes and freezing and thawing and the like. Wet and temperature changes in the material expands and contracts repeatedly can cause the material to crack or even be destroyed. In cold areas, freezing and thawing of the material damage is more serious. Chemical effects include erosion and damage water or gas acid, alkali, salt and other substances to the material. Biological and biochemical effects, refers to a material by insects, fungi and other decay and corrosion. When the general mineral materials, such as stone, brick, concrete, etc., exposed to the atmosphere or water level changes in areas, environmental testing, mainly physical damage effects occur; when in the water, in addition to the physical effects of chemical erosion may also occur. Metal materials, causes damage mainly chemical corrosion and electrochemical corrosion effect. Wood and plant fibers composed of organic material, often due to the biological effect is destroyed. Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, Tongbai indoor environment testing, qualification, Henan Province is one place since the first detection through examination of business. Business in the Pile qualification qualification, the qualification grade steel, a qualified indoor environment, building energy efficiency testing, subject testing, materials testing, Dengzhou indoor environment testing, curtain detection, detection of roads and bridges, air defense projects to detect a number of aptitude test and testing laboratories. Wall material means building facades, walls and partitions the materials used, mainly from the load-bearing wall, building envelope and separate role. Wall materials can be divided into load-bearing material and non-load-bearing materials into two categories. A large proportion of the wall in the building, so a reasonable choice cost of the building, security and stability is essential wall materials. At present, China has a common wall materials brick, block, plate three categories. Newfield indoor environment testing, Zhengzhou malpractice detection (certification), environmental testing provided by the Construction Engineering Testing Co., Ltd. Henan malpractice. Henan malpractice Construction Engineering Testing Co., Ltd. (www.hnrsjc.cn) (www.rsgcjc.com) is a leader in Zhengzhou, construction, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In malpractice detected leadership with the staff warmly welcome all inquiries negotiations to create a better future malpractice detected.