BEIJING (CEIS) -- Stone Group, a Beijing-based company listed on the Hong Kong Stock Exchange, over the weekend unveiled plans to expand business by focusing on the Internet commerce. "We will introduce an online shop later this months as part of our Internet-oriented business expansion," said Yang Hongru, chief executive officer of the Beijing-based Stone Investment Co. The investment company is an offshoot of Stone Group but will eventually become the dominant business. The company is also negotiating with a US corporation to co-develop an electric data inter-change system in China. The company makes special ticket printers and semiconductors as well as integrated systems.