The Hilong Group of Companies is a group of holding enterprises specializing in businesses related to the oil and natural gas industries. Centered in Beijing and Shanghai, a number of its subsidiary specialized manufacturers have established production bases in Jiangsu, Tianjin, Shandong, Shanxi, Shaanxi, the Northeast, and Sichuan. Its business also extends to overseas markets, and it has set up production and service bases in Canada's Edmonton, the UAE's Abu Dhabi, Kazakhstan, Ecuador and Russia through solely-owned enterprises or joint ventures, and has established trade and stock companies and offices in the USA's Houston and Moscow in Russia. In Beijing's and Shanghai's central business districts it has set up investment and trade centers to undertake the production and manufacturing of its oil investments, oil-related products, domestic and overseas trade and cooperation businesses.