The level of equipment in underground mines varies according to the size of the mine: 
Leveling agent is a common coating additive, it can promote the coating in the process of drying film to form a flat, smooth, uniform appearance. Can effectively reduce the surface tension of finishing liquid, improve its leveling and uniformity. Leveling agent can improve the permeability of finishing liquid, can reduce the possibility of spots and markings when brushing, increase the coverage, make the film uniform and natural.
Flatting Agent,Leveling Agent,Water-based Leveling Agent,Acrylic Leveling Agent
Jiangyin Thousands Chemicals Co. , https://www.wqhxcomposite.com