N.A.

GB/Z18333.2

QC/T741

GBT 20234

QCT 742

GB/T18332.1

QCT 744

GB/T18332.2

QCT 743

GB/Z18333.1

GBT 19750

GBT 18488.2

GBT 18488.1

GBT 24347

GBT 19836

CAN/CSA-C22.2 NO. 107.2-01

DIN VDE 0510-7

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