design, manufacture, production, and retail sales services of chemical injection equipment, including pumps, valves, and manifolds, used in the oil and gas industry; design and manufacture of capillary injection accessories; design and manufacture of downhole chemical injection valves; design and manufacture of high pressure and high flow chemical injection filters; design and manufacture of wellhead surface manifold assemblies; design and manufacture of anti-siphon, back pressure, and check valves; design and manufacture of downhole corrosion coupon holders; design and manufacture of chemical injection pump systems; design and manufacture of chemical injection flow verification switches; design and manufacture of quality high-pressure surface check valves; design and manufacture of chemical injection mandrels; custom design, manufacture, and sales of methanol chemical injection skid systems; custom design and manufacture of chemical injection oil systems; technical support, sales, and field services, including natural gas odorization, pipeline sampling, and industrial Internet of Things; repair of chemical injection pumps; stocking distributor services of instrumentation tubing fittings; custom design services using Computer Numerical Control (CNC) machining