The materials used for non-metallic boxes must comply with the requirements of GBT 15568-2008 General Sheet Molded Plastics (SMC), or better weather resistant materials must be used, and the wall thickness of the box must not be less than 5mm.
The metal box must be made of Q235-A or better metal materials, with a thickness not less than 1.2mm.
Non metallic components must be made of flame-retardant ABS plastic or better plastic materials.
The composition materials of the fiber optic distribution box must comply with the requirements of SJ, T 11363-2006 for the content of toxic and harmful substances in uniform materials (EIP-A class).