| 2. | In addition , our company also produces high - strength bolt grade 12 . 9 , grade 10 . 9 , grade 8 . 8 , internal hexagon , external hexagon , t shape bolt , jump ring , shield ring and standard component bolt . zhejiang yueqing city hong qiao cardan shaft co . , ltd . tech support wenzhou shangding 另外我公司生产高强度罗栓12 . 9级10 . 9级8 . 8级,内六角外六角t型罗栓卡簧档圈及标准件罗栓。 |