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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 50493-2019 |
Standard for design of combustible gas and toxic gas detection and alarm for petrochemical industry 石油化工可燃气体和有毒气体检测报警设计标准 |
China National Standards design combustible gas |
 English PDF |
| GB 50493-2009 |
Specification for design of combustible gas and toxic gas detection and alarm for petrochemical industry 石油化工可燃气体和有毒气体检测报警设计规范 |
China National Standards design combustible gas |
English PDF |
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