Airtight Building Solutions Limitedዩናይትድ ኪንግደም · 11 Imperial Drive, North Harrow HA27BP, United Kingdomሙከራ
United Kingdom Accreditation Service (UKAS) · 8944Testing · አክቲቭ (በስራ ላይ ያለ) · ዩናይትድ ኪንግደምተረጋግጧል: 11/10/2026ኦፊሴላዊ መዝገብ