NOTE 17. CONCENTRATIONS

For the three months ended September 30, 2014 and 2015, our two largest customers, China National Petroleum Corporation (“CNPC”) and China Petroleum & Chemical Corporation Limited (“SINOPEC”), represented approximately 46.65%, 1.64%, and 57.58%, 23.63% of the Company’s revenue, respectively.

For the three months ended September 30, 2014, two major suppliers accounted for 25% of the company’s total purchases. For the three months ended September 30, 2015, four major suppliers accounted for 60% of the company’s total purchases.