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Envirotech Vehicles, Inc. engages in the design, manufacture, and installation of zero-emission electric drivetrain systems for fleet vehicles. Its products and services include zero-emission vehicles and chassis; e-trikes; and Neighborhood Electric Vehicles that are enclosed vehicles with seatbelts, climate control, and fold-down rear seats. The company was founded by Edward Riggs Monfort on August 12, 2012 and is headquartered in Corona, CA.

CurAegis Technologies, Inc. does not have significant operations. Previously, it was engaged in the development and marketing of technologies in the areas of wellness, safety, and power. The company was formerly known as Torvec, Inc. and changed its name to CurAegis Technologies, Inc. in June 2016. CurAegis Technologies, Inc. was founded in 1996 and is based in Rochester, New York. On August 4, 2021, an involuntary petition for liquidation under Chapter 7 was filed against CurAegis Technologies, Inc. in the U.S. Bankruptcy Court for the Western District of New York. On August 31, 2021, the involuntary petition was approved by the Court.

Omnitek Engineering Corp. develops and sells technology to convert diesel engines to an alternative fuel, natural gas engines, and complementary products in the United States and internationally. It offers conversion kits for converting diesel engines to run on an alternative fuel, including compressed, liquefied, and renewable natural gas, as well as liquid petroleum gas; natural gas engines and components; and high-pressure natural gas coalescing filters. The company's products are used for stationary applications; and the transportation market, such as light commercial vehicles, minibuses, heavy-duty trucks, and municipal buses, as well as rail and marine applications. It sells and delivers its products through its distributors, system integrators, fleet operators, and engine conversion companies, as well as directly to end-users. The company was incorporated in 2001 and is headquartered in Vista, California.

Puradyn Filter Technologies, Inc. designs, manufactures, markets, and distributes bypass oil filtration systems for use with internal combustion engines and hydraulic equipment that use lubricating oil worldwide. The company offers its products under the Puradyn brand name. Its Puradyn system cleans oil by providing a second circuit of oil filtration and treatment to continually remove solid and liquid contaminants from the oil through a filtration and absorption process. The company also manufactures replacement filter elements for the Puradyn system. Its products are marketed to various industries that include hydraulic applications, and other users of engines or equipment that utilize up to 50 weight oil for lubrication. The company sells its products directly, as well as through manufacturer's representatives, distributors, or other agents to OEMs, other distributors, and national accounts. It serves oil and gas services, power generation, construction and forestry, commercial marine, mining, and transportation industries. The company was founded in 1987 and is based in Boynton Beach, Florida.

China Zenix Auto International Ltd. engages in the design, manufacture, and sale of steel wheels for commercial vehicles. It operates through the following segments: PRC Aftermarket Sales, PRC OEM Sales, and International Sales. The PRC Aftermarket Sales segment produces and sells steel and aluminum wheels to distributors. The PRC OEM Sales segment produces and sells steel and aluminum wheels to vehicle manufacturers. The International Sales segment manufactures wheels to distributors and vehicle manufacturers outside China. The company was founded on July 11, 2008 and is headquartered in Zhangzhou, China.