Most of our walllcoverings are imported from Europe and Korea, and all of which are certified in the following categories: 1. CE Declaration performance, a safety declaration in accordance with EU law for certain products in which our wallpaper adheres to prevailing European regulations for building materials. 2. RAL Quality (German quality assurance & certification), this is to ensure that our products are not only comply with the principles of sustainability but also provide for the return of secondary raw materials to the recycling system. 3. KS Mark (Korean standards association), this is a KS industry standard certification system, a certification in accordance with Korean industry standard which inspects strictly on the product quality for protecting the customers. 4. EPD (Environmental Product Declaration), this declaration provides transparently the environmental information of products for the purpose to support the eco-friendly products and lead the market-driven environment improvement