Since 1964 United Laboratories, Inc. has been a leader in the specialty chemical business offering more than 300 innovative products. In the 70's, United was first in the industry to introduce citrus-based cleaners named Solar Solvents. In the 80's, United introduced enzyme-based products called Zyme-Line. As your responsible solutions partner, United's most recent introductions are leading the way with ground-breaking new technologies, such as safer alternatives to phosphoric and hydrochloric acid-based products called Earth Smart® Acid (ESA) and our latest, patented SMART SOLVE® products, which are VOC-free, NPE-free and Earth Smart®. Both of these product lines prove once again that we can provide our customers with products that are safer to use and safer for the environment.