HOUSTON--(BUSINESS WIRE)--3D printing is quickly becoming a vital component in the healthcare and medical fields, a trend that has caught the eye of Changing Technologies, Inc. (OTCBB:CHGT) as it seeks to expand into new markets and open additional revenue streams. Forecasts show 3D printing for medical applications will enjoy an impressive 15.4 percent compound annual growth rate (CAGR) over the rest of this decade. The market will increase to $965 million by 2019, up from $354 million in 2012