皮革的制造是对动植物废料的最佳利用。生皮被定义为副产品，是源自全球肉类消费所产生的可再生资源，因此作为副产品的生皮将继续为皮革生产提供原材料来源。LWG认证工厂可+wlayar
英国皮革认证（LWG）于2005年成立，是由品牌、零售商、皮革生产商、贸易商、技术专家等利益相关方组成并执行的认证项目。是目前全球最权威的皮革认证项目LWG认证是一套管理体系，准确评估制革商的合规标准和环境管理措施，并在皮革行业促进可持续发展和协调生态环境的供应链管理方案。
LWG认证针对真皮认证的环境审核工序：
A、生皮鞣制
A、生皮到皮
C、生皮到成品革
D、鞣制皮革
E、从硬皮到成品革
F、鞣制皮
G、生皮/皮至酸洗/预鞣材料
目前升至7.0版本，需要提供2年的记录，如外发工厂涉及到LWG的产品也要把能源记录算进去，否则会影响分数，7.0版本对化学品要求，如：客户的受限物质测试，社会责任部分审核要求，如有做BSCI,SMETA,SLCP等可直接提供
对工厂的最基本要求是环评报告等有关于环境方面证件必须要具备，另外2022年将取消分包商的审计。LWG认证是应用于皮革行业的环境绩效考核认证，一般认证审核是2天，它是一项追溯体系认证，但是不同于GRS、GOTS认证的追溯体系认证，只不过是在追溯方面的分数没有，就是综合在分数上不能更好的展现给客户。LWG认证算是皮革行业走出国门的基础认证，并不是强制性的，目前全球有600多家LWG公司，中国占据六分之一。
Introduction The Tannery of the Future Foundation created the original checklist, released in 2015, to increase transparency and sustainability in the international leather supply chain. The self-assessment tool was intended to be easily accessible for leather manufacturers and their buyers: traders, wholesalers, brands, and retailers. In 2019, Leather Working Group and the Tannery of the Future Foundation agreed to develop the checklist as part of a robust system of environmental improvement and stewardship for the leather industry. By merging the Tannery of the Future Checklist with the Leather Working Group’s “Are You Ready For An Audit?” program, it is anticipated that the guidance and mechanism for better environmental and sustainable leather manufacturing will become accessible to more leather manufacturers around the globe. Why use this tool? This questionnaire aims to provide leather manufacturers across the world with an accessible introduction to the environmental and sustainability issues that are relevant to the industry. Leather Manufacturers are given an initial indication of how they are performing environmentally and which areas they could improve upon to become more responsible manufacturers. There are references to sources of more in-depth information and guidance. In addition, this self-assessment questionnaire serves to raise awareness. All companies and individuals purchasing leather or leather products gain insight into the leather-related environmental good practice. How to use this tool? Leather Manufacturers should use this document to begin to assess how environmentally they are performing and to evaluate what policies, procedures and data records should be in place to ensure responsible tannery operations. Each section identifies the basics required and allows a leather manufacturer to self-assess how well they meet the requirements and where there are areas for improvement. The questionnaire primarily addresses environmental issues, however there is additional best practice information relating to social elements contained at the back of the document. After completion of all topic areas, the leather manufacturer will be able to pinpoint and prioritise overall environmental and sustainability areas for further improvement, where necessary, before embarking on the on-line assessment or progressing to a full LWG environmental audit. By completing this self-evaluation, the tannery will be able to assess its environmental capabilities in order to consider formal certification of environmental performance through the Leather Working Group. This tool is designed as a first step towards understanding what is required to operate in a sustainable and responsible way. It does not result in certification and is not equivalent to a full LWG environmental audit.
