2517.10.00

HS 编码 2517.10.00（第 25 章「盐、硫、土、石」；子目 251710「卵石、砾石、碎石及燧石，用于混凝土骨料、铺路或道碴等」）在美国税则中对应"Pebbles, 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"。美国海关对该编码商品征收最惠国税率 (MFN) Free、第二栏税率 30%。