China National Standards

China Technical requirement roadside GB Standards List

  •  China "Technical requirement roadside" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 39336-2020 Technical requirement of roadside bag filling for gob-side entry retaining with high-water material
    沿空留巷高水材料巷旁袋式充填技术要求    		 China National Standards
    Technical requirement roadside
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