On 14 November 2011, Chengtong Development International Trading Limited (CT Trading), a 55%-owned subsidiary of China Chengtong Development (HKG:0217), entered into a sales contract with Hangzhou Silong Metal Material Co., Ltd., whereby CT Trading has sold 315.333 metric tonnes tin ingots to Hangzhou Silong, at US$7.2 million (HK$56.165 million).

The company said that the net profit of the sales transaction is estimated to be HK$530,000, being the sales price less the purchase price and the related bank charges and finance costs of the sales transaction.