Ink-absorbing coating is a key functional material for digital printing quality, widely used in three major fields: textiles, advertising consumables, and synthetic film materials. This article systematically sorts out its multiple names, two technical routes of porous and swellable types, and formula composition. Combined with the cooperation practices of Guangzhou Xuhua Technology Co., Ltd., Shenzhen Inkbank, and Guangdong Xiejia, it analyzes the technical logic and industrial collaborative value of the synergistic optimization of coating and ink.

Glass fiber paper waterproofing agent is a functional waterproofing treatment agent specifically developed for glass fiber filter paper. By forming a low surface energy coating layer on the fiber surface, it solves the industry pain points of fiber structure collapse and filtration performance degradation of glass fiber filter paper in humid environments. The article details Guangzhou Xuhua Technology Co., Ltd.'s technological layout in this field, covering two major product matrices: the fluorine-free series (C030Y, C025B) and the C6 series (1630P, 1630PD). It also introduces the company's in-depth cooperation with industry authorities such as Nanjing Fiberglass Research and Design Institute and Zaisheng Technology, as well as the company's 1200㎡ R&D center and the R&D strength of a professional team of over 40 people.