COPPELL, Texas--(BUSINESS WIRE)--Mannatech, Incorporated (NASDAQ: MTEX), the founder of the M5MSM (Mission 5 MillionSM) Foundation, the pioneer of nutritional glycobiology and the global innovator of naturally sourced supplements based on Real Food Technology® solutions, today announced the promotion of Russ Wood, Vice President of Hong Kong Sales and Marketing, to Regional President of Greater China where he will lead the company’s continued growth in Hong Kong and bring the Mannatech opportun