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xi lanh-pit tong-Cylinder-piston-xy lanh Xi lanh QCQ2A QCDQ2A12 16X10 15 20 25 3040 50 75 100, xi lanh-pit tong-Cylinder-piston-xy lanh Xi lanh QCQ2A QCDQ2A20 25X10 15 20 25 3040 50 75 100, xi lanh-pit tong-Cylinder-piston-xy lanh Xi lanh QCQ2A QCDQ2A32 40X10 15 20 25 3040 50 75 100