大发彩票导航网站,ag真人手机版下载,365速发在线登,一分彩平台,尊龙官网国际版下载,大发welcome彩票app,在线买球app

Embedded in the circular hole formed by the groove and groove, and then pressed with the insulation groove through the inclined plane buckle, the crimping cover can be easily and quickly connected and fixed to the wire head.