Fuel cells produce electricity and heat electrochemically by combining oxygen from the air with a fuel, preferably hydrogen, from methanol, natural gas, or petroleum. Reformers are often used in conjunction with fuel cells

Battery and fuel cell test equipment consists of specialized test stations, stands or systems, monitors and component modules for performance or endurance testing. 

Load cells are transducers for force and load measurement, often with mounting packaging.  They are widely used in testing, instrumentation, and as components in larger devices such as scales

Rechargeable batteries or secondary batteries contain active materials that can be regenerated by charging. When the energy produced by rechargeable batteries drops below optimum efficiency, secondary batteries may be recharged in a couple of ways, depending upon their construction. 

Specialty fibers, fabrics and textiles are based upon a unique composition, weave, or technology, and are designed for specialized applications.

Alternative power generators produce electricity from renewable energy sources, such as wind, flowing water, solar energy and biomass, which create less environmental damage and pollution than fossil fuels

Cogeneration equipment produces power and thermal energy from a common fuel source, generally one that is considered to be a waste product from another process

Reserve batteries separate the electrolyte from the rest of the battery so that the electrolyte remains inert.

Ultracapacitors store charges (energy) by physically separating positive and negative charges (unlike batteries which do so chemically).  Very high power densities can be achieved by this method.

Foam fabrication services providers produce products made from foam cores, foam plastic, cushioning foam, closed cell foam, acoustic foam, and polyurethane foam

NDT supplies and accessories are components, ancillary equipment, standards, and consumable materials used in non-destructive testing (NDT

Combustion analyzers and flue gas analyzers measure the gas content of emissions in order to monitor the combustion efficiency of fuel-burning equipment

Specialty polymers and resins are proprietary polymers, resins, monomers and intermediates. This category includes plastics and elastomers that are based on proprietary curing technologies or chemistries, or that are designed for specialized applications.

Plastics and plastic materials are organic, synthetic or processed polymers that are supplied as raw materials or stock shapes. They typically consist of thermoplastic or thermosetting resins and can be made into many forms.

Chemical and material processing services modify or produce chemicals, powders, foods, minerals, rubber, plastics, adhesives, and other bulk materials on a contractual, toll or fee basis. Common processes include compounding, distillation, drying, formulation, mixing, blending, purification, extraction, synthesis, and powder milling.