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Asia's Top Global Leader
in Wood Industry​​

Sound absorbing ceiling materials

Functional ceiling materials made with environmentally-friendly raw materials

Producers Dongwha Enterprise

Brand 동화자연마루

Website www.greendongwha.co.kr

01. Introduction

Our products are made with RockWool, a material made by Japanese company Daiken without using asbestos. They are environmentally-friendly, Sound absorbing ceiling materials that also purify indoor air.

02. Characteristics

  • SE0 rank (The highest quality among environmentally-friendly materials) + F4STAR certification) + ZERO asbestos (containing mineral wool)
  • Zero asbestos + Super E0 environmentally-friendly products (The highest quality among environmentally-friendly materials) (F☆☆☆☆-certified product in Japan).
  • They emit little indoor pollutants (e.g. HCHO and TVOC).
  • Noise absorption: The Rock Wool Sound absorbing board boasts an absorbing performance three to five times stronger than ordinary wallpapers.
  • Moisture adjustment: Ecotone absorbs or emits moisture as required, thus maintaining a proper level of moisture in a room.Hazardous material absorption: It provides healthy indoor environment by absorbing and decomposing harmful substances like formaldehyde and VOCs (volatile organic compounds).
  • Flame resistance: Made of non-flammable materials, it is resistant to flame-caused deformation and prevents harmful gas.
  • Negative ions: It creates negative ions (Ecotone 1,000~3,000/CC) semi-perennially and thus provides a pleasant atmosphere as if enjoying therapeutic walk at the forest.
  • Stench removal: It absorbs and decomposes stench in a room.

03. Product lineup

  • Eco-friendly sound-absorbing ceiling phones