難なん燃ねん加か工こう

noun

flame-retardant treatment; fireproofing

Refers to a process or treatment that makes materials resistant to fire, often used in textiles, building materials, and industrial products. Not absolute fireproofing but reduced flammability.

• このカーテンには難なん燃ねん加か工こうが施ほどこされています。

  These curtains have been treated with a flame-retardant finish.

• 建けん築ちく基き準じゅん法ほうで、カーペットに難なん燃ねん加か工こうが義ぎ務む付づけられている。

  Building standards require carpets to undergo flame-retardant treatment.