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GreenChek Technology Inc., a development stage company, focuses on manufacturing, marketing, and distributing hydrogen technology products that are designed to reduce gas emissions by motor vehicles. The company develops emission reduction device (ERD-3.0) for installation on various vehicles with an internal combustion engine. Its ERD-3.0 product generates hydrogen by means of electrolysis. The company was formerly known as Ridgestone Resources, Inc. and changed its name to GreenChek Technology Inc. in August 2008. GreenChek Technology Inc. was founded in 2006 and is based in San Francisco, California.