90382931
Dec 15, 2020
Chemical additives for use in the manufacture of wood preservatives, disinfectants, sanitizing agents, biocides, and fungicides; chemical compounds for preserving wood used in preservative coatings for wood surfaces
ChemicalsLumber and plywood treated for flame retardancy and to prevent insect damage rot and decay; chemically treated wood, namely, lumber, sawn timber, beams, posts, poles, pilings, and plywood
Nonmetallic Building Materials