Are Pipe Fittings Main Materials Or Auxiliary Materials?

‌Pipe fittings are auxiliary materials. In the classification of decoration materials, pipe fittings are usually classified as auxiliary materials rather than main materials. Auxiliary materials refer to materials that play an auxiliary role in the decoration process, usually including boards, keels, cement, sand, waterproof materials, plumbing pipes, wires, putty, glue, wood paint, latex paint, hardware, floor drain angle valve soft connection, thermal insulation and sound insulation materials, etc. In contrast, main materials refer to finished materials that can be directly seen and touched, such as floors, tiles, sanitary ware, cabinets, doors, lamps, switches and sockets, water heaters, faucets and showers, range hoods and stoves, radiators, wallpapers, ceilings, stones, sinks, water purifiers, garbage disposals, etc.