Jianyan Testing Group Chongqing Co., Ltd.

1. Company Overview
Jianyan Testing Group Chongqing Co., Ltd. (hereinafter referred to as "the Company") was established in 2008 and is a professional institution approved by the government to engage in engineering quality testing and safety appraisal. The Company has passed the "Inspection and Testing Institution Qualification Accreditation" of the competent administrative department for technical supervision and has been authorized to use the "CMA" mark. According to law, "the data issued are used for trade certification and product quality evaluation, and the results of its appraisal serve as notarized data and have legal effect." In addition, the Company has obtained the "Chongqing Construction Engineering Quality Testing Institution Qualification Certificate" granted by the competent administrative department for construction. The testing categories include witness sampling testing, foundation foundation engineering testing, main structure engineering on-site testing, building curtain wall engineering testing, steel structure engineering testing, building door and window testing, indoor environmental quality testing, building product testing, building intelligent testing, municipal bridge engineering testing, municipal road engineering testing, and construction engineering quality appraisal. The reports issued are an important basis for engineering quality control and completion acceptance. The Company has a strong technical and management support platform. Its superior controlling shareholder, Leizhi Holdings Group Co., Ltd. (stock code: 002398; stock abbreviation: Jianyan Group), is the first wholly listed construction research institution in China. After nearly 40 years of hard work, the Group has developed into a technology-based group enterprise integrating R&D, manufacturing, promotion, and service of new technologies, new products, new equipment, and new processes. It controls more than 40 subsidiaries and has 4 engineering technology research centers, 1 science and technology public innovation platform, and 1 postdoctoral research workstation approved by the government.

2. Talent Team
The Company has a high-quality and professionally complete technical team: more than 20 intermediate and senior engineers, more than 10 master's degree holders, and core technical backbones with more than ten years of industry experience.

3. Instrument and Equipment Configuration
The Company is equipped with more than 600 sets of testing instruments and equipment, including PIT dynamic testing instruments from PDI Company of the United States, data acquisition systems made in Japan, electro-hydraulic servo and hydraulic universal testing machines, ultrasonic flaw detectors, magnetic particle flaw detectors, concrete chloride ion electric flux testers, thermal conductivity testers, atomic absorption spectrophotometers, gas chromatographs, fully automatic building materials radioactivity detectors, anchor bolt pull-out testers, microcomputer-controlled special testing machines for steel pipe scaffold couplers, asphalt and asphalt mixture series equipment, cement testing series equipment, engineering structure seismic testing series equipment, bridge testing series equipment, intelligent door and window thermal insulation performance testing systems, building curtain wall physical performance testing systems, pipeline robots, pipeline periscopes, pipeline sonar detection systems, cable certification analyzers, Ethernet testers, spectrum analyzers, grounding resistance testers, etc.

4. Business Scope and Main Testing Items
Serial Number Service Field Service Content
1 Building engineering material testing: cement and admixtures (including additives, fly ash, mineral powder, etc.), concrete, mortar, sand, stone, soil, concrete mixing water; steel bars and structural steel (including welded parts and mechanical connectors); building waterproof materials: waterproof coatings, waterproof membranes, waterstop strips, inorganic rigid waterproof materials; building wall materials: building coatings, putty, wall bricks and blocks, lightweight partition boards, ceramic tiles and facing tile bonding strength, ceramic wall and floor tile adhesives; construction fasteners for steel pipes, prestressed anchor fixtures.
2 Building engineering reliability appraisal: reliability appraisal of industrial and civil buildings, seismic appraisal and evaluation of buildings, construction quality testing and appraisal, building fire damage appraisal and evaluation.
3 Building energy efficiency testing: insulation systems, insulation materials (including autoclaved aerated concrete blocks, polystyrene boards, polyurethane foam, etc.), energy-saving performance of curtain walls, doors and windows.
4 Indoor environmental quality testing: radon concentration, formaldehyde concentration, benzene concentration, ammonia concentration, TVOC concentration, radon concentration in soil.
5 Main structure engineering on-site testing: appearance quality of structural components, load tests of structural components, non-destructive testing of strength and defects of reinforced concrete (steel pipe concrete) components, non-destructive testing of masonry mortar strength, mechanical properties of masonry, dynamic characteristics of structures.
6 Building steel structure and steel grid engineering testing: non-destructive testing of welding quality, installation deviation of steel structures and steel grids, anti-corrosion and fireproof coating, steel materials, high-strength bolts, anchor bolts, anti-corrosion coatings.
7 Building curtain wall and door and window engineering testing: physical properties of building curtain walls, doors and windows, silicone sealants, sealants for stone, anchors (anchor bolts), aluminum profiles, glass.
8 Foundation foundation engineering testing: static load testing of bearing capacity of foundation and composite foundation (shallow plate load test, static load test of composite foundation), bearing capacity of piles (vertical compressive static load test, vertical uplift static load test, horizontal static load test), pile integrity (low-strain dynamic testing, core drilling method testing), static and dynamic penetration testing, standard penetration testing, pull-out resistance of anchor bolts (soil nails), deformation of buildings and sites, foundation pit monitoring, foundation coefficient (K30, K45, K60).
9 Municipal road engineering testing: cement, steel and welded parts, concrete, mortar, soil, geosynthetics, aggregates, inorganic binder stabilized materials, asphalt, asphalt mixtures, subgrade and pavement, pavement bricks, pipes, water supply and drainage pipelines, structural defects of pipelines, functional defects of pipelines.
10 Bridge engineering testing: bridge load testing, old bridge appraisal and evaluation, construction monitoring and control, completion acceptance testing, structural safety during operation period, appearance quality.
11 Building product testing: building guardrails (railings), shield tunnel segments, wires and cables, pipes and fittings.
12 Building intelligent testing: computer network systems, integrated wiring systems, cable television and satellite television systems, public address systems, conference systems, clock systems, building equipment monitoring systems, security technology prevention systems and emergency response systems, computer room engineering.

The Company will inherit the excellent core concepts of Leizhi Holdings Group, integrate into the tide of development and construction in the Greater Southwest, base itself on Bashu, innovate and integrate, deepen and refine, endow them with more vivid individual connotations, and with a new attitude, interpret the Company's vigor and grand ambitions. Looking to the future, Jianyan people are united with high passion, and in accordance with the quality policy of "objective and fair, accurate and efficient, scientific management, serving customers", sincerely provide professional services for construction projects.