HOUSTON--(BUSINESS WIRE)--Changing Technologies, Inc. (OTCBB:CHGT) is considering pursuing 3D printing opportunities in the multi-billion dollar toy industry, offering makers competitive replacement and custom-manufactured parts in its ongoing efforts to expand into new markets and build additional revenue streams. “Toy makers are a natural market for us to target,” said CHGT CEO Marco Valenzuela. “So many toys today are made from materials that are very conducive to 3D printing. Using this tec


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