GB 40881-2021
Code for security system design of low concentration gas pipeline transportation of coal mine
煤矿低浓度瓦斯管道输送安全保障系统设计规范
CurrentMandatory
Industry
Hygiene, processing, packaging, food machinery, seed and agricultural inputs, and refrigerated transportation standards.
Start with product category, contact material, facility hygiene, transport, and labeling. Mandatory GB metadata here should be cross-checked against food safety and market supervision sources before shipment.
煤矿低浓度瓦斯管道输送安全保障系统设计规范
儿童青少年学习用品近视防控卫生要求
人体血液及血液成分袋式塑料容器 第1部分:传统型血袋
家用卫生杀虫用品安全通用技术条件
牙刷及口腔器具安全通用技术要求
饲料添加剂 第10部分:调味和诱食物质 谷氨酸钠
外科植入物 金属材料 第4部分:铸造钴-铬-钼合金