Classification Information
Prefabricated metal building structures in the nature of soundproof rooms for use as noise reduction booths; prefabricated metal building structures in the nature of soundproof rooms for use as soundproof noise insulation booths
Metal GoodsPrefabricated non-metal building structures in the nature of soundproof rooms for use as noise reduction booths; prefabricated non-metal building structures in the nature of soundproof rooms for use as soundproof noise insulation booths
Nonmetallic Building Materials