Shandong Longde Composite Fiber Technology Co., Ltd. is the holding company of Shandong Wanhao Paper Group. It was established in 2012 with a registered capital of 53.1 million yuan. It is located in Shandong Linqu Economic Development Zone and covers an area of 260 mu. It is based on industrial filter materials. It is a national high-tech enterprise integrating scientific research, development and production. It is a national specialization and new "little giant" enterprise. It has "Automotive Filter Paper Shandong Engineering Research Center", "Shandong Province One Enterprise One Technology R&D Center", "Shandong Provincial Industrial Design Center" and other research and development platforms, are the governing units of the Automotive Filter Committee of the China Association of Automobile Manufacturers and the Filter Branch of the China Internal Combustion Engine Industry Association. The company has passed the IATF16949 international auto parts quality management system certification, and is listed in Shandong Property Rights Exchange Center (abbreviation: Longde Technology, stock code 300239).