Oxiteno reinforces its commitment stateside by establishing a COO position in the country and a new commercial office. Timothy Earl Madden is joining Oxiteno to implement the company's growth plan in the US.    As part of the investment plan announced in November 2015 to expand its activities and increase its capacity to serve clients in the region, Madden has a solid track record of building global businesses, most recently with the Lubrizol Corporation, which is part of the Berkshire Ha...