H2O Plus is relocating its headquarters from Chicago to San Francisco. The announcement is part of a series of strategic changes as H2O Plus shifts its business model from a manufacturing company to one that focuses on the marketing and sales of H2O Plus products around the world.   As part of its shift in strategy, the company will be closing its Chicago manufacturing plant and headquarters over the next six to 12 months. Some key employees will be offered the opportunity to transfer to San Fra...