Apple Inc's Apple Pay mobile payment system will be available in China from Feb. 18 for Industrial and Commercial Bank of China Ltd (ICBC) customers, bank representatives said in social media posts on Tuesday.The technology giant had previously said the system would launch in China in early 2016, making it Apple Pay's fifth country as it accelerates development of a planned new revenue stream. ICBC is China's biggest lender by assets.The lender is set to be joined by a raft of peers: Apple's China website lists 19 Chinese lenders as official Apple Pay partners, and state media reported two other lenders will also go live with the service from Feb. 18. Greater China is Apple's second-largest market by revenue, but the company faces an uphill battle to match that prowess quickly in mobile payments.