Gain Control Limited - Services and repairs various makes of Variable Frequency Drives, including Danfoss-Graham, ABB, AC Tech, Saftronics, Allen-Bradley, Siemens, and TB Woods. Enersol - Makes solar swimming pool heaters. Halton Machining - Precision custom parts, jigs and fixtures. Robertson Screw - Makes standard screws, collated screws, screw and washer assemblies, hex nuts, cold-form specials, tools and power bits. The founder was responsible for the design of the square head Robertson screw in 1908. Phoenix Manufacturing Ltd. - Manufactures a range of standard and custom made reusable form fitting insulating boots for all types of indoor and outdoor applications. Lorama Chemicals Inc. - Manufactures four grades of polysaccharide resins. These eresins are highly modified, colloidal suspension of finely-divided blend of polysaccharide particles (disperse phase) in water (bulk phase or dispersion medium). Dura Canada - Modular steel storage cabinets and accessories. Prothane - Manufacturer of polyurethane products such as rollers, roller covers and bumpers for markets including aircraft, automotive, manufacturing, mining, pipeline, water and waste treatment.