首页>
外国专利>
process for the production of mineral acids to shiny filaments, sheets and the like system of sulfidverbindungen free zelluloselösungen using aluminum or chromium salts from viskoselösungen.
process for the production of mineral acids to shiny filaments, sheets and the like system of sulfidverbindungen free zelluloselösungen using aluminum or chromium salts from viskoselösungen.