mofcom.gov.cn
2015-2-5u2002·u2002Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling or for railway or other ballast, shingle and flint, whether or not heat-treated Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading No. 2517.10
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