National Grid ETO
Associate Member
Penwortham 400KV Substation , National Grid , Howick Cross Lane , Penwortham , Preston , PR1 0NS , England
National Grid North West Area (OHL)
Associate Member
Pentir , Bangor , Gwynedd , LL57 4ED , Wales
National Grid OHL
Associate Member
Swansea North , Llangyfelach , Swansea , SA5 7PD , Wales
National Inspection & Technical Testing Company Ltd
Full Member
P.O Box 10771 , Al-Jubail Industrial City , Jubail , 31961 , Saudi Arabia
National Oilwell Varco Pte Ltd - Speciality Inspection Servi
Full Member
161 Pioneer Road , Singapore , 639604 , Singapore
National Petroleum Construction Company
Associate Member
Mussafah 16th Street , Abu Dhabi , 2058 , United Arab Emirates
