) Iron discoloration. This is caused by F4 "ions and wood tannins, phenols, flavonoids and lignin wood discoloration caused by a chemical reaction of Weinan wooden showcase, mostly grayish black. In this type of change, the transition metal iron is not only easy and polyphenol formation of metal complexes exhibit color Xianyang wooden showcase, but also in the presence of iron ions, polyphenol more susceptible to oxidation, the formation of tannin iron, Funing ferric and quinone compounds. The transition metal copper ions have a similar reaction wood Showcase, natural tannin or tannic acid copper copper shenmu wooden showcase, the wood was a light red color, metallic metal showcase modern showcase showcase leading products, it is more modern, high practical value and durability. attentive friend They can be observed in the market more than 90% of the merchandise display cabinets are metal showcase Metal Showcase received since ancient times people respected, most people like to use metal jewelry to highlight the noble qualities of individuals, compared with other showcase it born with "imperial" temperament is unmatched. Xi'an wooden showcase, Shaanxi Boha Showcase (certified), wooden showcase provided Shaanxi Boha Showcase Productions Ltd (www.xabhzg.com Shaanxi Boha Showcase Productions Ltd. /) 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 to discuss create Shaanxi Boha showcase a better future.