Vegetable tanning is the name of a kind of processing technology of raw skin. The raw skin removed from an animal is called raw skin or raw skin, which is skin. Untreated skin will rot. The original leather after processing is called leather. The head skin tanned with vegetable tanning agents (tannin acid, plant polyphenols and other polyphenol compounds) extracted from plants is called vegetable tanned cattle hide, which is generally called cattle hide.
"Lv" part of the leather used to carry the shoulder strap and horn guard, after a period of time will be red and dark, is the use of vegetable tanning cattle hide.
With the development of modern industrial technology and people's in-depth understanding of the concept of environmental protection, the requirements of international leather standards in environmental protection are becoming more and more strict. In this context, vegetable tanning leather has become one of the main materials for fashion products in the field of leather goods.
Since 1978, the Federal Republic of Germany took the lead in the certification of green products. Many developed countries have followed suit. In September 2002, the European Union issued the Directive 2002 / 61 / EC, which stipulates that azo dyes (azo) with aromatic amine concentration more than 30ppm should not be used in the production of textiles or leather products that may have long-term contact with human skin or mouth. With the increasing attention of EU countries to the environment, the EU has continuously issued new directives, constantly introducing some new chemicals Some of these chemicals will cause harm to the human body and some to the environment. If leather and textile products are exported to Europe, they need to be consistent with EU directives at any time, and they may be returned or even destroyed. Therefore, environmental protection and can meet the EU standard vegetable tanning leather has become one of the most popular leather materials.