青岛致用新材料取得含牺牲层耐酸型聚磺酰胺复合膜制备方法专利

Group 1 - The core point of the article is that Qingdao Zhiyong New Materials Technology Co., Ltd. has obtained a patent for a method of preparing acid-resistant poly sulfone composite membranes with a sacrificial layer, with the patent announcement number CN115591419B and application date of September 2022 [1] - Qingdao Zhiyong New Materials Technology Co., Ltd. was established in 2015 and is located in Qingdao City, primarily engaged in the manufacturing of chemical raw materials and chemical products [1] - The company has a registered capital of 2.1 million USD and has made investments in one other enterprise, holds 13 patents, and possesses five administrative licenses according to data from Tianyancha [1]