It is reported that on August 13, 2014, the State Intellectual Property Office of the People's Republic of China granted Anhui Wandong Chemical Co., Ltd. the invention patent for the preparation method of D301 macroporous weakly basic styrene-based anion exchange resin. This is another invention patent obtained by the company following the one for the preparation method of an adsorption resin with an ultra-large specific surface area, which was awarded on April 10, 2013. In addition, the invention patent authorization certificate for the preparation method of the company's 201×4 weakly basic styrene-based anion exchange resin is in the process of being issued. This move indicates another significant scientific and technological achievement made by the company in its patent application work, laying a solid foundation for the company's rapid development.