Industrial and Commercial Bank of China (ICBC) has deployed a new IBM mainframe computer system, the two companies said on Tuesday, boosting the U.S. technology giant's credentials in the country. IBM's joint announcement with ICBC, the world's largest bank by market capitalisation, shows IBM is still doing business with China's state-owned banks despite widely circulated media reports in May that suggested China's central government had ordered banks to remove IBM equipment because of cybersecurity concerns. The U.S. company's efforts to repair any public relations damage have included the announcement in recent weeks of a string of deals in China to assure investors of its future in the market and salvage its reputation with other potential Chinese buyers.