The national standard in China is GB/T 12706-2016, which specifies the terminology and definitions, product classification, materials, manufacturing processes, quality requirements, inspection methods, inspection rules, as well as requirements for marking, packaging . The national standard in China is GB/T 12706-2016, which specifies the terminology and definitions, product classification, materials, manufacturing processes, quality requirements, inspection methods, inspection rules, as well as requirements for marking, packaging . Steel cable trays have national standards. Addresses shipping, handling, storing, and installation of metal cable tray systems. Information on maintenance and system modification is also. Surfaces of system components which are likely to come into contact with cables during installation are inspected to ensure they shall not cause damage to the cables when installed correctly. Cable ladder systems and cable tray systems shall be manufactured in accordance with BS EN 61537, channel support. Cable trays are essential components of electrical power and data communication systems that provide safe and reliable routing, support, and protection of cables and wires.