Henan malpractice Construction Engineering Testing Co., Ltd. is a professional indoor environment testing testing company Hebi, Henan Province is one of the detection business since the first through the examination of the qualification place. 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. The volume of material in its natural state refers to a material solids and pore volume occupied (with open pores and closed pores) and volume. Regular shape to the material, the volume can be measured directly calculated, for irregularly shaped materials, after the surface with wax seal, measure the volume by drainage method. When the pores within the material contains water, its quality and volume have been changed, and therefore the determination of the apparent density of the material shall indicate their water situation. Water situation does not indicate an apparent density, apparent density refers to dry. 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. Materials testing is based on the provisions and requirements of the relevant standards, adopt a scientific and reasonable means of detection, the performance parameters of building materials inspection and measurement process. Many varieties of building materials, shapes, performance varied widely. Quality of construction materials, performance has a direct impact of the project quality. The quality of construction materials to determine need for building materials testing. Detection of building materials, is divided into production units and construction units to detect detection in two ways. Xinxiang indoor environment testing purpose production unit detected by the main quality parameters were measured material, the performance is determined whether the material relevant technical standards to evaluate the quality grade to determine if the quality of products, to determine whether the product factory. Detection of the construction unit is the use of sampling methods prescribed set aside a certain amount of material sent to the testing organization has relevant qualifications for testing. Its purpose is to detect the main indicators of environmental quality of the test material, the performance is determined material meets the quality requirements, that is qualified to determine whether the batch of supplies for the project. Jiaozuo indoor environment testing, detecting malpractice environment (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.