Unprocessed and semi-processed rubber, gutta-percha, gum, asbestos, mica and substitutes for and pulp made of all of the aforesaid materials; plastic and resins in extruded form, including in the form of pulp for use in manufacture; sealing, packing and insulating materials; flexible pipes and tubes, not of metal; tubular bags or liners of curable plastic material for sealing surfaces of passageways and internal surfaces of pipelines; non-metallic pipe unions and tubes; water-tight rings; substances for insulating buildings against moisture; caulking compounds; non-metallic encapsulated seals; sealants for joints for building purposes; parts and fittings to the aforesaid goods

Materials, not of metal, for building and construction; rigid pipes, not of metal, for building; lining for rigid pipes, not of metal, for building use; plastic conduits for drainage; drain pipes, not of metal; street gutters, not of metal; non-metallic drainage installations; rigid underdrainage pipes, not of metal; drain traps being valves, not of metal or plastic; drains, other than of metal or plastic; non-metallic waterproofing boards; non-metallic flashings for waterproofing buildings; bituminous products in the form of membranes for damp-proofing; self-leveling concrete for use in building construction; mortar; non-metallic damp course materials; cement levelling preparations; mortar levelling preparations; non-metallic foundation material for use in construction; non-metallic casings for use in building or construction; concrete conduits; non-metallic conduits for water discharge; parts and fittings to the aforesaid goods

Laying of pipelines under water; installation of water purifying plants and sewage treatment plants; concreting of foundations; insulation of foundations; excavation work, shaft work, sewage work, including sewage inspection and sewage treatment in connection with repair of sewage systems; canal, earth and diking work construction, repair and installation; pipeline laying; mounting tubular bags or liners by application on surfaces of passageways and internal surfaces of pipelines to line these; drainage services; land drainage; rental of drainage pumps; construction of drainage systems; installation of rainwater drainage systems; beneath ground construction work relating to drain laying; building sealing; services for the damp proofing of buildings during construction; concrete renovation; concrete leveling services; concrete sealing; grout reinforcement for bridges; grout reinforcement for dams; grout reinforcement for foundations; construction of foundations for buildings; construction of foundations for civil engineering structures; beneath ground construction work relating to foundation laying; services for the lining of pipes; pipeline maintenance; insulation of pipes; beneath ground construction work relating to pipework; pipeline installation and repair; servicing of conduits; installation of tubular linings in pipelines; maintenance and repair of pipeline systems; damp proofing services; building sealing; interior sealing and caulking services; building sealing and caulking services; road sealing and stripping