我司专业生产USB工具包,USB HUB,伸缩线,多功能转接头,伸缩耳机,电脑灯,迷你光电鼠标,伸缩网线,读卡器,数字小键盘等,欢迎来电洽谈!详细说明:1. DC3.5 M to DC3.5M Retractable Cable
2. DC3.5 M to DC3.5F Retractable Cable
3. DC3.5 M to RCA F Retractable Cable
4. DC3.5 M to 2xRCA F Retractable Cable 
5. DC3.5 M to 3xRCA F Retractable Cable