天然雕花手镯内径新疆和田玉

硬质钨钢球合金球30.815/30.82/30.825/30.83/30.835/30.84mm钢珠

精密针规销式塞规30.81/30.82/30.83/30.84/30.85/30.86/30.89MM

针规塞规量棒30.8 30.81 30.82 30.83 30.84 30.85 30.86 30.88

销式针规塞规高精30.81/30.82/30.83/30.84/30.85/30.86/30.87MM

荐针规塞规量棒30.8 30.81 30.82 30.83 30.84 30.85 30.86 30.8-

硬质钨钢球合金球30.815/30.82/30.825/30.83/30.835/30.84mm钢珠

针规高精度塞规30.83 30.84 30.85 30.86 30.87 30.88 30.89mm

针规高精度塞规30.83 30.84 30.85 30.86 30.87 30.88 30.89mm

针规高精度塞规30.83 30.84 30.85 30.86 30.87 30.88 30.89mm