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GB/T 21431-2023 Chinese PDF (GB/T21431-2023) GB/T 26794-2023 4-2023_Chinese: Agricultural irrigation equipment -

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4-2023_Chinese: Agricultural irrigation equipment - Sprinklers - Part 4: Test methods for durability (Chinese: 农业灌溉设备 喷头 第4部分：耐久性试验方法)

English versions: GB/T 28168-2025

English versions: GB 28008-2024

English versions: GB/T 44871-2024

GB/T 21431-2023 Chinese PDF (GB/T21431-2023) GB/T 26794-2023 4-2023_Chinese: Agricultural irrigation equipment -GB T 21431 2023_Chinese: Technical specification for inspection of lightning protection systems of buildings (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21431 2023

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