Subliming intumescent fire protection products. A world class company dedicated to the manufacture and distribution of FIRE-SORB & THERMO-LAG - subliming, fire resistant products for the protection of commercial buildings, industrial and petrochemical facilities, power generating plants, offshore platforms, floating production ships, computer chip manufacturing plants, nuclear plants, LPG tanks.. Manufacturer of Subliming Intumescent Passive Fire Protection Products - Fire Retardant Coatings Nu-Chem, Inc. is a subliming intumescent passive fire protection service. We manufacture and distribute fire resistent products for commercial and industrial facilities.