GSIN
*5129B
*5131C
*5139A
*5139B
*5159B
*5166A
*C112A
*C119C
*C119F
* — *Construction of Other Buildings
*Highways, Roads, Railways,Airfield Runways
*Construction Services, Not Elsewhere Specified
*Engineering Works, Not Elsewhere Specified
*Other Special Trade Construction Work
*Fence Construction
*Architect/Engineer Services - Airfield, Communication and Missile Facilities
*Construction Supervision Services
*Engineering Services - Buildings
*Architectural & Engineering Services - Highways, Roads, Railways,Bridges and Dams
*Architect and Engineering Services - Buildings
*Architectual & Engineering CADD Services
*Engineering Services
*Engineering Services - Construction Management
*Office Type Sound Recording and Reproducing Machines - Maintenance