Fluorescence: Fluorescence May be the home of a mineral to emit obvious mild when exposed to ultraviolet radiation. Gypsum isn't going to fluoresce under UV light-weight. Hair or fibre and lime or clay may be included to plasters during manufacture. The plaster coats, except for some complete coats, are sanded. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050