PATERSON, NJ – JNS Smithchem LLC has been appointed the sales representative covering northern New Jersey, New York and the New England states for Keim Additec Surface GmbH and Silcona GmbH. Keim Additec Surface GmbH, Kirchberg, Germany, is a manufacturer of specialty wax additives and surface conditioners featuring zero-VOC and APEO-free products. Its sister company, Silcona GmbH, is a supplier of high-performance additives for wetting and surface modifications in environmentally friendly coating systems. The U.S. subsidiary company, KEIM-ADDITEC Surface USA LLC, has offices in Wilmette, IL.