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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 11874-1989 |
Direction of opening and symbolic designation of marine doors and windows 船用门和窗开启方向和符号标志 |
China National Standards Symbolic designation direction |
 English PDF |
| GB/T 5825-1986 |
Symbolic designation of direction of opening and closing and faces of doors and windows 建筑门窗扇开、关方向和开、关面的标志符号 |
China National Standards Symbolic designation direction |
English PDF |
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