2. flavonoids and lignin and phenols. Flavonoids, and phenolic lignin is cause discoloration of wood color and the main chemical ingredient. These compounds have a strong ability to restore Weinan wooden showcase, susceptible to oxidants, its oxidation product makes wood color or color deepened. Meanwhile wooden showcase, but also easy transition metal effect and color. Nakano study as proof of quasi-three: The main color structure of lignin and other phenolic compounds as ferric complexes, phthalic type structure with attached, terephthalic awake, with methide, and conjugated coniferyl aldehyde and chalcone structure. Tannins, flavonoids and other phenolic compounds mostly found in the heartwood. Egg cleaning method as time goes by, there are several particularly stubborn dirt on a white leather sofa at home, a headache. At this point, you can take the right amount of egg white Xianyang wooden showcase, with cotton dipped repeatedly wipe the surface of leather products such as leather sofas dirty place. This method is used to clean leather is particularly effective, but there is a certain polishing effect egg white, then use the leather will exhibit original luster. Wooden showcase Shangluo, Shaanxi and Boha Showcase (certified), wooden showcase provided by the Shaanxi Boha Showcase Productions Ltd. Shaanxi Boha Showcase Productions Ltd (www.xabhzg.com/) is Xi'an, exhibition equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Shaanxi Boha showcase leadership with the staff warmly welcome all inquiries negotiations to create Shaanxi Boha showcase a better future.