Colorless Clear Liquid / High Transparency Crystal Adhesive Epoxy Hardener HWR-226 Used For Transparent Coating Glue As Crystal jewelry adhesive curing agent HWR-225 It's produced by cycloaliphatic amine and aliphatic amine. Such curing agent is high transparency, has low viscosity, colorless and transparent, long operation time, fast curing speed, good surface effect after curing, excellent yellowing resistance. 1.The physical and chemical properties Appearance Colorless