20 Furniture, mirrors, frames for pictures and paintings; goods of wood, wax, cork, reed, cane, wicker, horn, bone, ivory, whalebone, shell, amber, mother-of-pearl, meerschaum and substitutes for all these materials and of plastics and gypsum, namely, nonmetal connections for furniture, parts for furniture, shelf connecting elements, fitted furniture cover not of fabric, drawer rails, furniture wheels, file cabinets, writing and drawing desks, working benches, bamboo curtains, window shade curtains, roller blind, bamboo band curtains, bead curtains for decorative purposes, curtain rails, curtain rings, curtain hooks, curtain bars; metal furniture and furniture for camping, namely, camping beds, inflatable beds; bedding, namely, mattresses, spring mattresses, pillows, and sleeping bags; looking glasses in the nature of mirrors