Image above: the focal point of the cottage is the cast-iron spiral staircase, which we commissioned.
上图：铸铁楼梯是整座别墅的焦点，是我们自己定制的。
Through integral cast forming, the spiral torsional shaft has the advantages of high strength and abrasion resistance, safety and reliability, long service life, low using cost and the like.
本实用新型通过铸造一体成型，具有强度及耐磨性好、安全可靠、使用寿命长、使用成本低等特点。
Through integral cast forming, the spiral torsional shaft has the advantages of high strength and abrasion resistance, safety and reliability, long service life, low using cost and the like.
本实用新型通过铸造一体成型，具有强度及耐磨性好、安全可靠、使用寿命长、使用成本低等特点。
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