Visitors use phones underneath of logo of Tencent at Global Mobile Internet Conference in BeijingBy Denny Thomas and Michelle Price HONG KONG (Reuters) – A heavily discounted purchase of a loss-making solar-panel maker last week has cast a spotlight on the Chinese takeovers of so-called listed shell companies in Hong Kong, which may be used to sidestep the bourse’s rigorous listing process. China’s No.1 social network and online media company Tencent Holdings Ltd and developer Evergrande Real Estate Group joined forces to purchase Mascotte Holdings Ltd for $97 million, a 97 percent discount on the target company’s market capitalization. Tencent is likely to inject some of its newer businesses into the acquired listed company, hoping its market value would grow as a Hong Kong bull market continues, analysts and a person with knowledge of the matter said.