??????? ? ???????? 8? 31? ??(昆明)?? ??? 2013? 500? ???? ??? ???, ??????????(SINOPEC)? 2012? 2? 8,306? ??(? 507? 456? ?)? ?????? 9? ?? 1?? ??? ????????????(China National Petroleum Corporation, CNPC), ??????(State Grid Corporation of China), ????, ????, ????, ????, ??????????(CHINA MOBILE), ?????????(China State Construction Engineering Corporation), ?????????(China National Offshore Oil Corporation)? ?? 2??? 10?? ?????.
??? ??? 500? ???? ? 1-10? ???? ??? ?? SINOPEC, CNPC, ??????, ????, ????? ??? 1??? 5?? ?????? ????, ????? ?? ? ?? ??? CHINA MOBILE? 6??? 8?? ?????. 500? ?? ? 42? ??? ?? ???? ??? ?? 4? ??? ?? ?? ??? ??? ??? ?? ???? ???? ???.
2013? ?? 500? ??? ???? ???? 198? 6,700? ??(? 3? 5,587? ?)? ????? ???? ?? ??? ?? 13.48% ?????. ????? ?? ??(? 17? 9,130? ?)? ???? ??? 123?? ??? ??? ?? 16? ?????. ? ?, 16?? ?????? ??? ?? 1? ?????. 123? ??? ?????? 34? 9,700? ??(? 6,264? 1,761? ?)?? ?? 500? ?? ????? 69.9%? ??? ????.
??? ?? ??, 500? ?? ? 216? ??? ???? ???? ??? ????? 43? ??? ??? ???? ??? ?? 30?? ???? ?, 7? ??? ??? ?? ?????. 500? ?? ? 430? ??? ????? ??? ?? ??? 5,424? 9,500? ??(? 97? 1,771? ?)?? ??? ?? 11.37% ?????? ???? ??? ?? ?? ?? ???? ????? ????? ?????? ???. ? 430???? ?? ???? ??? 1.27%? ?? 2? ?? ?????.