TMTPOST -- Aland Health Holding, a China-based global manufacturer of nutritional supplements, is reportedly up for sale. The company's owners are looking to sell their combined controlling stake, aiming for a valuation of more than $1.5 billion, Reuters reported, citing two sources with knowledge of the matter. The company's founder and chairman, Chang Liang, holds about 60% of the company. The remaining shares are owned by a group of investment firms, including Affinity Equity Partners, Goldman Sachs Growth Equity, and Henderson Investment Corp.