China Telecom is the largest fixed-line operator in China, originally covering 21 southern provinces but now operating nationally. It has 201 million broadband customers, and 439 million wireless subscribers, having overtaken China Unicom to become the second-largest wireless operator in China behind China Mobile. The firm is increasing its cross-selling of products and seeing strong growth from industrial digitization services, such as internet data centers and cloud computing. Its internet data center business is already the largest in China and it is expanding overseas.