custom manufacture of industrial products, namely, components and parts for HVAC systems, components and parts for plumbing and refrigeration systems, fire and smoke protection systems, and filtration and application equipment for use with specialty chemicals and lubricants; custom manufacturing of coatings and penetrants, pipe thread sealants, firestopping sealants and caulks and adhesives/solvent cements; custom manufacture of specialty chemicals, namely, lubricants and greases, drilling compounds, anti-seize compounds, chemical formulations and degreasers and cleaners