With ten years'research and development,BIOSK tannery wastewater reuse technology has been granted ten patents by IPO in China and four patents in Australia.Its application in mass production in tanneries with more than 1,700 times' wastewater reusing proves the reliability, efficiency, stability and economy of the technology. If this technology can be adopted by most of the tanneries around the world, it will not only basically solve the pollution issue in leather industry, but also improve the leather quality.