GB/T 23020-2023 Chinese PDF (GB/T23020-2023) GB 14102.3-2024 GB/T 17145-2024_Chinese: Guidelines for recycling

GB/T 17145-2024_Chinese: Guidelines for recycling of used mineral oil (Chinese: 废矿物油回收与再生利用导则)

1-2024_Chinese: Metallic materials - Knoop hardness test - Part 1: Test method (Chinese: 金属材料 努氏硬度试验 第1部分: 试验方法)

4-2023_Chinese: Agricultural irrigation equipment - Filters for micro irrigation - Part 4: Granulated media filters (Chinese: 农业灌溉设备 微灌用过滤器 第4部分：颗粒介质过滤器)

3-2024_Chinese: Connections for hydraulic fluid power - Metallic tube connections - Part 3: Face seal (Chinese: 液压传动连接 金属管接头 第3部分:端面密封)

English versions: GB/T 21220-2024

GB/T 23020-2023 Chinese PDF (GB/T23020-2023) GB 14102.3-2024 GB/T 17145-2024_Chinese: Guidelines for recyclingGB T 23020 2023_Chinese: Assessment specification on integration of informatization and industrialization for industrial enterprises (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23020 2023