5 tons. According to the official website of China Lonking Holdings Co., Ltd., it can be seen that the counterweight of Lonking 928 rotary excavator is 5 tons. China Lonking Holdings Co., Ltd., referred to as "Lonking", is composed of representatives of the 11th and 12th National People's Congress, Mr. Li Xinyan, a national model worker, a national outstanding builder of socialism with Chinese characteristics, an executive member of the All-China Federation of Industry and Commerce, and a national advanced individual in glorious undertakings, founded a large-scale construction machinery enterprise in Longyan, Fujian in 1993. In 2005, he took the lead in China's construction machinery industry. Listed on the main board of Hong Kong (stock code 03339). In 2011, it ranked 23rd among the top 50 global construction machinery companies, with the third highest average return on assets in the world, the fourth highest operating profit margin in the world, and the fifth highest sales growth in the world. In 2012, despite the double test of the global financial crisis and domestic macro-control, various development indicators still made steady progress.