Using phenolic resin 803L in an adhesive system instantly increases its viscosity. It is like a super strong glue that tightly binds materials together, and phenolic resin 803L can also improve the temperature resistance of the adhesive. It can remain stable and not fail in both high and low temperature humid environments. If you need a powerful adhesive material, you may want to try adding this phenolic resin 803L to make your product have strong bonding performance and excellent temperature resistance