6
Building materials primarily made of metal, namely, metal building panels, open meshwork panels, roof coverings, girders, beams, posts, scaffold; metal fasteners, namely, bolts, nails, rivets, screws, helical connecting coils; prefabricated buildings primarily made of metal; portable metal buildings; shelters structures primarily made of metal; modular military accommodation units primarily made of metal
19
Building materials primarily made of non-metal, namely, non-metal building panels, open meshwork panels, non-metal roof coverings, girders, beams, posts, scaffold; prefabricated buildings primarily made of non-metal materials; non-metallic portable buildings; non-metallic shelters structures; military accommodation units primarily made of non-metal materials
20
Non-metal fasteners, namely, bolts, nails, rivets, screws, helical connecting coils
41
Training of personnel and military personnel in connection with the erection of buildings, transportable buildings, shelters and military accommodation units
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