With safety as its top priority, The Otis Elevator Co, one of the largest elevator and escalator producers in the world in terms of sales volume, is planning to increase investment in maintenance and repair by 30 percent in China.

Alan Cheung, president of Xizi Otis Elevator Co Ltd, the biggest subsidiary of the US-based Otis, says its servicing business will be the company's focus, requiring more employees and training.

"China is not only the largest market for the elevator and escalator business but also the biggest service market in the world," Cheung says. "Because equipment that has been installed in the past decades gets older, there will be a great demand for maintenance and repair.