杭州势拓科技有限公司
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White plastic threaded bolt with a wide flat head.
Red plastic threaded bolt with a flared base, lying on a white surface.
Threaded metal bolt with a conical head.
Threaded metal bolt with a flanged head, showing dimensions and a 3D perspective.
White plastic threaded bolt with a wide flat head.
White plastic threaded bolt with a wide flat head.
Red plastic threaded bolt with a flared base, lying on a white surface.
Threaded metal bolt with a conical head.
Threaded metal bolt with a flanged head, showing dimensions and a 3D perspective.
锥形采样点（长度 80 毫米）
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