ENF level. The environmental protection level of water-based field board reaches ENF level. Based on the core technology of waterborne polymer, Waterfield independently developed the patented technology of the third generation of waterborne polyurethane aldehyde-free adhesive, using water instead of organic solvent, and successfully applied it to the production of plywood, blockboard, ecological board, wood floor, particleboard and KT polymer ecological board. The performance meets the quality standard requirements of aldehyde-free board and aldehyde-free floor. The board has the advantages of high strength, high water resistance, high flatness, no aldehyde addition, no odor and no deformation.