GFW21005 water repellent is nontoxic and odorless. As there are relatively active Si-H bonds in the molecule, under the action of catalysts it can react with chemicals containing active groups, such as double bonds or hydroxyl groups.

GFW21005 water repellent can be converted into film and produce a resilient waterproof coating on various substrates by catalyst at low temperature. Therefore, GFW21005 water repellent has the outstanding property which prevents moisture, mildew and rust. 

Besides, GFW21005 water repellent has a high permeability to water vapor, allowing the material to breathe.