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Aber Structural Design Ltd
Tan Rallt, Tregarth, Bangor, Gwynedd, LL57 4AE
Tel: 01248 601503
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Daltrys
Yr Aelwyd, 3-5 Church Street, Caernarfon, Gwynedd, LL55 1SW
Tel: 01286 671 027
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J M McKernon
9 Lloyd Street, Llandudno, Gwynedd, LL30 2UU
Tel: 01492 873718