How to judge the quality of water-based leveling agent?

after the water-based coating wets the substrate, the additive to control its flow and leveling is the leveling agent. water-based leveling agents are commonly used in water-based systems. how can we know the quality of water-based leveling agents and choose products with excellent performance? most of the existing water-based coatings are water-dispersed rather than water-soluble.…