First class quality control:

Zhongnan Green Building Group strictly implements the three in one certification system of quality, safety, and environment in the design, manufacturing, installation, marketing, and other processes, and controls product quality throughout the entire process and in all aspects. Introducing advanced testing equipment, zero defect information and systematic management, strengthening employees' sense of responsibility and quality concept, providing solid guarantee for product quality.

Chemical element spectrometer for detecting raw materials

Mechanical performance test of steel plate after entering the factory

Torque test of high-strength bolts after entering the factory

Ultrasonic testing of full penetration welds on box columns

Ultrasonic testing of full penetration welds on bridge box girders

Ultrasonic testing of fully penetrated welds in pipe trusses