Double Headed Screw 双头螺丝
Double-Headed Screw Element 双头螺纹元件
Micro double-headed forcing screw 微型双头加压螺钉
My company has a variety of devices 198 Units, mainly the production of full-thread screw, double-headed stud, round nuts, rings, pin and so on.
我公司有各种设备198台，主要生产全螺纹螺杆、双头螺柱、圆螺母、吊环、销类等。
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