HC68 series is a composed salt of cyclic-amidine and multi-acid. It utilizes the two different reaction rates of group in molecular structure, and during the curing process, it generates nonuniform shrinkage then forms the matt surface. It has both gloss decreasing and curing functions.

HARDLENTM DX-526P has an excellent solubility in various solvents, and solution stability is very good at low temperature.

HARDLEN DX 530 P is an adhesion promotor for difficult plastic such as polyolefin.

HARDLEN DX 523 P is an adhesion promotor for difficult plastic such as polyolefin.