ลายเซ็น:

[direct=https://www.ptallservice.com/]Tech[/direct]  [direct=https://www.ptallservice.com/%e0%b9%80%e0%b8%94%e0%b8%b4%e0%b8%99%e0%b8%aa%e0%b8%b2%e0%b8%a2%e0%b9%84%e0%b8%9f%e0%b9%80%e0%b8%9a%e0%b8%ad%e0%b8%a3%e0%b9%8c/]Fiber Optic
[/direct]  [direct=https://www.ptallservice.com/%e0%b9%80%e0%b8%94%e0%b8%b4%e0%b8%99%e0%b8%aa%e0%b8%b2%e0%b8%a2%e0%b9%82%e0%b8%97%e0%b8%a3%e0%b8%a8%e0%b8%b1%e0%b8%9e%e0%b8%97%e0%b9%8c/]Teclephone[/direct]  [direct=https://www.ptallservice.com/lan/]lan[/direct][direct=https://www.ptallservice.com/cctv/]cctv[/direct]