We offer multiple cleaning products as well as 2 varities of pure 99,99% Gamma-Butyrolactone. Chinese imported Gamma- 99,99% Butyrolactone. And our home manufactured 99,99% GBL. Pure GBLstarcleaner contains 99,99% Gamma Butyrolactone - GBL, a safe non-toxic, water-soluble cleaner. GBLstarcleaner is designed to be used on cleaning chrome wheels, deletion printing inks and removing graffiti.