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ZEA Wall covering is the worlds first wallpaper made of natural material which is called PLA, polylactic acid. The high molecular substance PLA is made of renewable resources, cornstarch, and can be recycled. Contrary to most wallpaper made of PVC, ZEA Wall covering doesnt contain formaldehyde and other harmful gases, which induce endocrine disrupting. It has deodorizing effects by its own natural material. In addition to this, it effectively purifies indoor air by absorbing and decomposing harmful particles by means of photo catalysis substances, which are coated on its surface. It also doesnt make toxic gas by fire damage.