GB/T 24721.4-2023公路用玻璃纤维增强塑料产品第4部分:非承压通信井盖国家标准
英文:Glass fiber reinforced plastic product for highway—Part 4:Non-pressure communications well lid GB/T 24721.4-2023介绍: 国...
英文:Glass fiber reinforced plastic product for highway—Part 4:Non-pressure communications well lid GB/T 24721.4-2023介绍: 国...