Which standard requires bonding for wire conduits (latest standard)?

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In accordance with the provisions of the \"Code for Acceptance of Construction Quality of Building Electrical Engineering\" GB50303-2002, it is necessary to make connections across electrical conduit; the purpose of such connections is to ensure electrical continuity of the conduit and to guarantee its proper grounding, thereby preventing accidents caused by electric leakage. The specific requirements are as follows: In 14.1.1, metal conduits and trunking must be reliably grounded (PE) or bonded to neutral (PEN), in accordance with the following provisions: 1 Zinc-plated steel conduits, flexible conduits, and metal trunking shall not have their grounding wires welded together; instead, the connection between two grounding clips used for this purpose shall be made using a copper-core flexible wire with a cross-sectional area of not less than 4 mm2 ； However, GB50303-2002 has been repealed; the current standard is GB50303-2015. Yet GB50303-2015 does not specify any requirements regarding the bridging of wire conduits. Does anyone know which standard currently requires such bridging for wire conduits? Thank you! !