Articles and materials from synthetics for use in underground mines - Part 1: Conveyor belts - Hygienic requirements, testing, marking.
用于矿井下合成的材料和物品。第1部分：传送带。卫生要求，试验，标识。
Articles and materials from synthetics for use in underground mines - Part 1: Conveyor belts - Hygienic requirements, testing, marking.
用于矿井下合成的材料和物品。第1部分：传送带。卫生要求，试验，标识。
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