【化】 甲醛化连二亚硫酸钠

urea-formaldehyde

benzoguanamine formaldehyde resin【树脂】

urea-formaldehyde resin

formaldehyde

phenol-formaldehyde resin

MPF；Melamine-phenlo-formaldehyde resin

formaldehyde condensate

urea formaldehyde resin