Under the new "Shenzhen City rental management a number of provisions" in article 13, paragraph on "in the process of registration or filing when the lease contract, the rental business rental or alter the function, structure, and should be provided with housing safety qualification Detection unit housing safety inspection report issued by the "requirement, according to the comprehensive management of Shenzhen City Office of instructions, to regulate the rental housing safety inspection, Shenzhen Wing Construction Safety detection and identification Ltd provide Longgang District, Longhua District, Mirs District, Greeting, Yantian District, Futian, Nanshan, Luohu District, Bao'an District, issued a professional record of rent (structural safety of detection and identification report) will now need Realtor former security inspection report as follows: industrial buildings, shops, offices, warehouses, residential change of use, training institutions, the detection range: Where the contract at the time of registration of industrial and commercial rental property rented change the function, structure, and no property houses for industrial and commercial use of the required building safety requirements for rental owners Detect and providing safety inspection reports; test items: load-bearing structure for the systems, structures arranged and supported three composite systems, building envelope systems projects. Plant identification is based on the structure of an integrated system of plant, process layout, the structure of the status quo, conditions of use and identification purposes, a comprehensive assessment of the overall structure of the plant or zone system is divided into one or more of the assessment unit. Scope: the need for plant reliability testing, final acceptance of the plant to third parties. Test content: tilt, each parameter detection subsidence, cracks, foundation, masonry structural members, wood structural members, concrete structures, steel structures, components and other general for field testing. Steel Components test, tensile strength test was used to detect the steel specimen tensile steel, steel bending strength test method to detect the bending deformation of steel specimens. Detection process: 1, the use of history and architecture investigation plant. 2, using text, drawings, photographs or video and other methods to record the main plant structure and load-bearing member. 3, the mechanical properties of the plant structure test items shall be determined by checking the required bearing capacity of structure. 4, when necessary, according to the structural characteristics of the plant, set up checking model, according to the mechanical properties of structural materials and the use of house load of the actual situation, according to existing norms checking plant safety margin structure. 5. determine status of powerhouse structure integrated to determine the safety of the plant.