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21-2023_Chinese: Mechanical structures for electrical and electronic equipment - Dimensions of mechanical structures of the 482
GB/T 31903-2024_Chinese: Identification
English versions: GB/T 27988-2024
English versions: GB/T 13748
English versions: GB/T 45272-2025
GB/T 30330-2023 Chinese PDF (GB/T30330-2023) GB/T 45541-2025 21-2023_Chinese: Mechanical structures for electricalGB T 30330 2023_Chinese: China online information exchange for publications Product information format for books (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 30330 2023
