Port-Talbot. MPN Windows and Veka Products offer quality double glazing in Port Talbot, Abergwynfi, Bryn, Cymmer, Glyncorrwg, Margam, Taibach, Aberafan, Aberavon, Baglan, Cwmafan, Port Talbot town centre, Sandfields, & West Glamorgan, South Wales ✓ Free Online Quotes. The leading double glazing company in Port Talbot. Now is the time to improve your Port Talbot home with our tailor made uPVC double glazed windows.