Coating Technologies hand cleaners are maximum strength in order to remove the toughest resinous products. Paints, oils and resin contaminants tend to be polar or none polar and you need to match the cleaning media to this polarity. Our C-150, C-155 and C-157 use a combination of both high and low polarity surfactants, and high solvency materials to cope with all types of contaminants and soils.