PTR [PETROCHINA CO] 6-K: (Original Filing)
[PetroChina Filed Annual Report on Form 20-F 20-F BEIJING, April 27, 2018 /PRNewswire/ PetroChina Company Limited (PetroChina, SEHK stock code 0857; NYSE symbol PTR; SSE stock code 601857) announced today that it has filed its annual report on Form 20-F 20-F 20-F, PetroChinas 2017 annual report ]