CONG NGHltP BIEN NANG CAO NANG Ll/C CANH TRANH CUA CAC NHA MAY NHIET DIEN KHf THUOC PETROVIETNAM TREN THI TRUONG DIEN CN Phan Thj My Hanh Vien Dau VietNam Email- hanhptm@vpi.pvr\.v Tom t i t Viic tham gia vdo thj trUdng phdt dien canh tranh Viet Nam (Vietnam Competitive Generation Market - VCOM) dang ddt cdc nhd mdy dien cua Tap dodn Ddu Qude gia Viet Nam (Petrovietnam) trUde thdch thde rdt Idn, dgc biet Id ea ehi hoat ddng eua thj trUimg ndy dang giai dogn tiep tuc hodn thien Dendng cao hieu qud hoat dgng, ngodi viec kien nghi vdi Nhd nUde thdo gdkhd khdn vi ca chi chinh sdch, edc nhd mdy edn ehu ddng thUc hiin edc gidi phdp kinh te,ky thugt nhdm qudn ly chi phi, gidm gid thdnh, tdng khd ndng eanh tranh Trong bdi bdo ndy, tdc gid phdn tich khd khdn cua cdc nhd mdy nhiet diin khi tham gia thj trUdng phdt diin canh tranh vd de xudt mgt so gidi phdp nhdm ndng cao hiiu qud dau tu TUkhda: Mo hinh thj trudng dieu dd tap trung, thj trudng phdt dien canh tranh VietNam, Hap dong Mua ban dien (PPA), H ddng (CfD) Gidi thieu Cdng nghiep dien duac Tap doan Dau Viet Nam xlc dinh la ITnh vuc kinh doanh ehinh.TrUde nhu c l u elp bich ve dien phue vu p h i t trien kinh te eua da't nudc, vdi Ipi the sin co ve ngudn khf, Petrovietnam da tham gia d i u tU xay dUng cac nha m i y nhiet dien khf va den da dUa vao van hinh thuong mai n h i miy: Ca Mau & 2, Nhdn Trach & vdi tdng cdng suat 2.700MW Nam 2013, tdng sin lUpng di&n cua nha miy nhiet dien eiia Petrovietnam dat 15,5 ty kWh, dong gop khoang 14% tdng sin lUpng dien t o i n qudc Thi trUdng phat dien eanh tranh Viet Nam dUa vao van hinh thif nghiem tuf ngiy 1/7/2011 va van hanh ehfnh thufc tU ngiy 1/7/2012, ap dung mo hinh thi trUdng dieu d o t i p t r u n g , chao g i i theo chi phf (Mandatory Cost-based Gross Pool) Ddi tuang tham gia thi trudng la eic nha m i y CO edng suit tuf 30MW trd len d i u ndi vao he thdng dien dien thude Tap doan Dien lUe Viet Nam), lich huy ddng cic td m i y dUde lap c i n eU tren b i n chao gia theo chi phi bien ddi TJ' le dien nang toan theo gia hpp ddng cho n i m dau ti^n cua thj trudng dUde quy dmh d mUc 90 - 95% tdng s i n lupng dien p h i t ciia nha may va p h i n lai dUpc t o i n theo g i l thj trudng giao TJ le s i n lupng dien toan theo g i i hpp dong se g i i m dan qua c i c n i m tiep theo nhung khdng thap han 60% Thi trudng phat dien canh tranh ddi nham khuyen khfch cic dan vj phat dien g i i m g i l sin xult, ning cao hi&u q u i hoat dong v l lam tang tfnh minh bach k h i u p h i t dien Tuy nhien, thj trudng m6i di v i o van hanh nen van dang giai doan tiep tuc hoan thien, mdt sd quy dinh ehUa hoan toan phu hpp, I n h hudng den sufc canh tranh cua eae n h i miy nhiet dien khf: Qudc gia Cic nha may thuy dien da mue tieu v l cac nha Cie loai hinh n h i m i y dien khae nhau, d i u tUxiy m i y dien BOT khong true tiep tham gia thi trudng phat dUng vao thdi diem khic cd chi phi sin xuat {chi dien canh tranh phi cd dinh v i chi phi bien ddi) rat khic Chi phi Khi Viet Nam ehUa ed thj trudng p h i t dien canh tranh, viec mua b i n dien dUde thifc hien tren cd sd Hop ddng mua ban dien (PPA) Hap dong PPA ve nguyen t i c co the dam b i o phan Idn cie chi phi ciia n h i may dien dupc ehuyen (pass through) vao gia b i n dien va d i m b i o mii'e loi nhuan cho phep dau t u eua cic n h i may thCiy dien thudng cao hdn so vdi chi phf d i u t u cCia eac nha may nhiet d\in (dien khi, dien than) Tuy nhien, ehi phi nhien lieu cua cac nhS may nhiet di^n khfva dien than lai eao hon nhieu so viSi cic nha may thiiy dien Cic nha may nhiet dien khf ciia Petrovietnam dau t u sau nen co ehi phi dau tU eao htJn so vdi cac nha may nhiet dien khf ciia Tap doan Di^n life Khi tham gia thj trudng p h i t dien canh tranh Viet Viet Nam (EVN) I n h hUdng cua bien dpng g i i ca,ty Nam, toan bd dien nang p h i t eua nha m i y dien dUde gia Khi tham gia v i o thj trudng p h i t dien canh tranh, ban eho ddn vi mua budn n h l t {Cdng ty Mua ban cie nha may nhiet dien khf cCia Petrovietnam (sCf duing 58 OSUKHI-Sd 12^2014 PETROVIETNAM edng nghi hi^n dai, it gay d nhiem moi trudng nhung g i i t h i n h eao) p h i i canh tranh vdi c i c nha m i y dien eu, suit dau t u t h a p , da thu hdi ehi phi k h i u hao, cd ngudn nhien lieu r§ hdn va do ed g i l t h i n h s i n xuat thap hdn aa_ Vao miia khd, eac nha may nhiet dien thUdng dupe huy ddng tdi da Hguon.BaocioKkhinhaamlOliSaduackKnUoancaacacnMmafil.i} Tuy nhien, de dupe huy dong vao mua Hinh Ga cdc nhd mdy dien (36ng/kWh) mua, eac nha may nhiet dien khf p h i i chio g i l dmde t h i p p h i i canh tranh vdi eie nha m i y thdy di^n (vio nhiJng gid t h i p diem, g i i p h i t cua thuiy dien tham ehi ehi ddng/kWh) Mie du tai mdt sd thdi diem, g i i ban khdng dCi bu d i p chi phf nhien lieu, nhung cae nha m i y nhiet dien khf p h i i chap nhan Id, tham gia phat dien de ban che cie ruii ro ve ky thuat, d i m b i o an t o i n td may Hien tai, mo hinh n g i n h d\in Hinh Gid cua cdc nhd mdy dien chua ed s U t l c h bach giiJa cie k h i u p h i t dien, truyen t i l p h i n phdi va kmh doanh diin EVN vtfa q u i n ly cac doanh nghiep truyen t i l - phan phdi kinh doanh dien, ddng thdi vifa ehi phdi ngudn dien p h i t (chiem khoang hdn 50% nguon dien p h i t ) Wil Viee EVN vifa thufc hien chufc n i n g dieu h i n h lai vda tham gia thi trudng p h i t dien canh tranh chua hoan t o i n d i m b i o suf k h i c h quan cd ehe mua b i n dien Hoat ddng thj trudng p h i t dien eanh tranh, cic nha m i y dien cOa Petrovietnam p h i i ddi mat vdi thaeh thu^c r l t ldn De duac huy ddng, cac nha m i y phai chao g i l canh tranh Vi vay, c i c nha may can nghien CLfU, tim kiem c i c bien p h i p de tiet kiem chi phf, giam g i i t h i n h n i n g cao k h i nang eanh tranh, d i m b i o s i n lupng dien phat v i tdi uu hda loi n h u i n Bii b i o chi c i c t h i c h thu^c ma c i c n h i m i y nhiet di^n khf cOa Petrovietnam dang g i p p h i i tham gia thi trudng phat dien eanh tranh v l de x u l t mot sd giai o h i p n h i m n i n g cao k h i n i n g canh tranh, tang hieu Hinh Suot hao nhiet hdng ndm cua cdc nha mdy nhiit diin giai Soon 2009-2012 Mot so loai chi phi chii yeu gia cDa cac nha may nhiet dien thuoc Petrovietnam Trong ca c l u gia cua cae nha may, cie loai chi phi nhU: ehi phf nhien lieu, ehi phf v i n hanh va b i o dudng sifa chiJa (O&M) va ehi phf k h i u hao la nhdng loai ehi phi chii yeu, ehiem tJ Idn gia s i n xuat Do dd, cac chi phi n l y c i n dxspc xem xet, cu the de cd bien p h i p q u i n ly phu hap nham g i l m gia t h i n h , n i n g cao hieu q u i kinh doanh 2.1 Chi phi nhiin lieu 3ul dau t u cuia eae nha m i y nhiet dien dang hoat Chi phf nhien lieu ehiem tJ Idn n h l t Jdng, rdt bai hpc kinh nghiem de d i u t u eac dU i n gia s i n xuat eiia cac nha may nhiet dien Jien khf thdi gian tdi khf, vao khoang 60 - 80% gia t h i n h Viec t a n g / g i i m chi DJUKKl-l 59 CONG NGHIEP DIEN phf nhien lieu se i n h hudng tnic ti^p den g i i t h i n h s i n xuat ciia eie n h i may 2.1.1 Gid Do cac dieu kien lich sCf khich quan nen gia ban cho cie n h i m i y nhiet dien hien rat khic Cac nha miy nhiet dien cua Petrovietnam ddi sau sif dung nguon khf mdi phai chju g i i Nguon Biiocdoldichlnhdddiwekimlodii(iia(dcnhamayaSm2013n,3} cao hdn so vdi cic nha m i y Hinh Suat Hau tif cdo cdcnhd mdy dien sif dung ngudn khf eu Them vao dd, cic n h i m i y mdi lai phdng va to chUe cdng t i c sufa chufa b i o dUdng thiet bj cich xa ngudn nen co cudc phi van chuyen nhien lieu c i n duac xem xet, ed bien phap phu hpp nham tiet kiem eao hdn Mae du phii mua nhien lieu vdi g i l eao nhlt ehi phf nhung van p h i i d i m b i o an toan ky thuat 2.3.1 Ldp ki hoach duphdng vdt tu nhung Nha may Dien Ca Mau va dang hoat ddng vdi muc tieu khai thic triet de ngudn khf PM3-CAA, vi v i y Viec xie djnh ke hoach dU phong v l t tU de d i m bio chua phii tham gia vao thj trudng p h i t dien canh tranh, dong thdi mue tieu an t o i n ky t h u i t v i hieu q u i kinh te la ehi phi nhien lieu khf dUde chuyen (pass through) vao gia thieh thifc Idn ddi vdi cie n h i may Tren cd sd do, cin danh ban dien gia tinh trang thiet bj va lupng hda Ipi fch - chi phf lien quan Nha may Dien Nhon Trach va phii mua nhien lieu vdi g i i cao, bat Ipi canh tranh tren thj trUdng p h i t dien canh tranh phii chio gia theo chi phi bien ddi de dupe huy ddng 2.1.2 Tieu hao nhien lieu Cae nha m i y nhiet dien khf eda Petrovietnam deu mdi dupe xiy dung, vi vay tieu hao nhiet hing n i m deu dat djnh mufc kinh te ky thuit Tuy nhien, tuong lai, tieu den cic quyet djnh nen dat mua vat t u d u phdng sdm (dl mua dupe g i l thip) hay de can thay th^/xly suf c6 mcil mua (chap nhln rui roky thuat va mua vattu vdi gia cao) tif dd cd ke hoaeh d u phdng v l t t u phii hpp 2.3.2 Qudn /y viic mua sdm vdt tU Cong t i e mua sIm v i t t u eho cie nha m i y dUdc ap dyng theo hinh thufc q u i n IJ t i p trung, Cdng ty me Tdng c6ng ty Dien lUc Dau khf Vi^t Nam {PV Poweri lam hao nhien lieu se tang theo tuoi thp thiet bj, dd cac nha dau mdi Mo hinh ed Uu diem thUdng lupng gia m i y cung c i n chCi dong nghien cu'u, cd gill p h i p ky thuat mua v l t t u v d i s d luong ldn va g i l m sd lupng v l t tUdii de g i i m tieu hao nhien lieu phong ed t h i sif dung chung vat tu 2.2 Chi phi khdu hao Chi phf khiu hao chiem ty trpng tuf 10 - 20% gia cua eac nha miy N h i may Dien Nhdn Trach v i dupe x i y dung sau, co suit d i u t u cao hon nhieu so vdi Nha m i y Dien Cl Mau & va cic nha may nhiet dien khic Chi phf d i u t u eao hdn dan den khau hao Idn han, I n h hudng den g i l v i khd thu hdi chi phi cd dinh tham gia thj trudng p h i t dien canh tranh Trong thdi gian qua, viec q u i n IJ tap trung cdng tac mua sam v i t t u cua PV Power da dat dUPe mdt sd ket qu3 n h l t dinh, g i l m bdt dupc chi phi tdn kho v i t tu, nhien edn mpt sd ban ehe: Cic nha may dien Ca Mau & 2, Nhan Traeh sif dung thiet bj eCia Siemens; rieng Nhan Trach sCf dung thiet bj cua Alstom, do khong the dung ehung vit tif vdi cae nha m i y khic Nhi m i y Dien Nhdn Trach hoat dpng ddc lap, PV 2.3 Chi phi van hdnh vd bdo dudng sda chda cddinh Chi phi van hanh v l b i o dudng sCfa chCfa co dinh Power chi ean thiep d khiu lap ke hoach mua vat tU, viec mua sam v l t t u d o n h i may tuf thuc hien ehiem ty - % g i i eiia cac n h i miy De Cdng ty CP Djch vu Ky t h u i t Di^n life Dau khiVifit q u i n ly tdt chi phi nay, cac van de nhU q u i n ly v i t tU d u Nam (PVPS) ehi sifa chOa, bao dUdng, khdng thuc hiSn 60 Diu KHi-sd 12/2014 PETROVIETNAM i Xem xet doanh thu ddi v6i 1200 1100 J: •1 1000 ^^ ">- — — ^^ = ; ^ J ^- 500 700 600 500 phan sin lUOng dien toan theo g i l thj trUdng cila cac nha may nhiet cHen ^^_ ^ 7/2013 a/20 ! 9/2012 10/201211/20 Cae n h i may nhiet dien eua Petrovietnam cd chi phf bien Ttiarig ThiSng /2013 2/2013 T— >.phib.inlMiNT1 Thang 3/3013 4/3013 5/2o'l3 6'2o'll Tliang ThSrig 7/2013 a'2013 ddi eao han (do ehi phi nhi§n lieu cao) so vdi cac nha may cung loai Chipn,biEna6iNT2 hinh cCia EVN v i cie loai hinh n h i m i y dien khic nhU: thiiy dien, dien /finh Gid thi trudng vd chi phi bien doi binh gudn ciio Nhd mdy Bien Hb '''™'^'"*^ tmng giai dogn 7/2012 - 8/2013 chifc nang eung c l p v l t tu, do han ehe viec suf dung chung v l t t u giUa cie nha miy 2.3.3 Cdng tdc sda chda, bdo dudng Viec sifa chufa v l b i o dudng cic n h i may nhiet dien than si:r dung ngudn nhien lieu nUdc Vi viy, tham gia thj trUdng phat dien eanh tranh, cic nha m i y nhiet dien ciia Petrovietnam gap b i t ipi phii chao g i i bang ehi phf bfen ddi va khd thu hdi ehi phi ddi vdi phin sin lupng dien t o i n theo gia thj trudng Die biet giai doan nhu c l u thj trUdng thap, n l u ehao vdi mufc g i l du dupe thufc hien theo mo hinh q u i n ly tap trung, de d i m b i o thu hdi chi phi thi khdng dUt3c huy dong, cdn PVPS thuc hien thong qua cie hpp ddng bao tri d l i han neu chao g i i t h i p de dupe huy dong thi bj 16 (LTMA) ky vdi eic nha miy Qua dd, PVPS n i m dupe die tfnh ky t h u i t v i lieh suf van h i n h eua thiet bj, thuan Ipi qua trinh xuf ly sU cd va b i o dUdng djnh ky Viee tham gia cung cac chuyen gia nude ngoai cic dpt b i o dudng sifa ehufa Idn giup PVPS tich luy kinh nghiem, n i n g cao nang lUc sifa chUa, b i o dudng va g i l m dan viec thue chuyen gia nUde ngoii Ket q u i tham gia thj trudng p h i t dien canh tranh cho thiy, tai mpt sd thdi diem, g i i thj trudng binh q u i n khdng du bu d i p chi phi b i l n doi eua cic n h i miy Ap lUc se Idn hdn ddi vdi eic nha m i y n l u nhu ty le sin lupng dien nang toan theo gia thj trudng t i n g len v i o cic nam tiep theo gia thj trudng van tiep tuc khong dCi bii d i p chi phf Tuy nhien, PVPS la cdng ty nhd nen han ehe TU ehfnh thufc tham gia v i o thj trudng phat dien viee dau tU m i y moc, thiet bj ehuyen dung, dpi ngu can canh tranh, cie nha m i y da p h i i khdi ddng nhieu hon so bd ky thuat ehUa du manh, pham vi hoat ddng gidi vdi giai doan trudc tham gia thj trudng Dieu dan han, chO yeu l i cung c l p dieh vu sifa chCfa, b i o ducfng den Ipi nhuan euia cac nha m i y bj I n h hudng tang chi cho n h i may nhiet dien cuia Petrovietnam Djch vu phf khdi ddng, chi phi b i o dudng sifa chDa cOa PVPS ehiem ty ie nhd cie hpp ddng b i o tri d l i han ky vdi cie nha may, ehi khoang 20 - 30% Hien tai, Doanh thu cua cic nha m i y nhiet dl^n cua PVPS ehju trach nhiem sifa chufa eie thiet bj phu Phan Petrovietnam hien van chu yeu dufa vao doanh thu cdng viec cd g i i tri Idn nhU b i o tri, siJa ehUa khdi thiet tif Hdp ddng CfD Viec tham gia thj trudng p h i t dien bi ehfnh ciia nha m i y (turbine khf, turbine hdi, Id thu hdi canh tranh dang d l t cic n h i m i y nhiet dien eda nhiet) ddn vj che tao thUc hien Petrovietnam vao tinh trang het su'c khd khan vi&c d i m b i o thu hdi dO chi phf Hop ddng thau phu ky vdi Alstom II hdp ddng shopping list, cho phep lUa chpn ve vat tU va nhan cdng, vi vay PVPS ed the t i n g ty le ndi dia hda du dieu kien thUe hi^n.Tuy nhien, hPp dong thau phu ky vdi Siemens I I hdp ddng trpn goi (full scope), dd khdng tao cho PVPS sU linh hoat neu mudn tang ty le ndi dia hda Cae v i n de tren cd I n h hUdng den hieu q u i cua viec I p dung md hinh sufa chufa, b i o dUdng tap trung, han ehe chat lUpng cdng t i e b i o dudng, sO'a chUa v i chua toi Uu hda chi phi v i n h i n h va b i o dUdng sufa chUa Ket luan va kien nghj Cac thich thife tif thj trudng p h i t dien eanh tranh Viet Nam dang tao I p lUe Idn ddi vdi cac nha m i y nhiet dien khf eua Petrovietnam De g i l l quyet kho khan cho cac nha may, Chinh phu va cae Bo/Nganh c i n sdm ed chinh sich gia khf thdng nhat de tao mdi trUdng eanh tranh binh dang giQa cic n h i m i y nhiet dien khi; xem xet, dieu chinh quy djnh ve thiet ke va van h i n h thi trudng p h i t didn canh tranh de d i m bao quyen loi cho cac n h i dau DAU KHi-so 12/2014 61 CONG NGHIEP DIEN tu, tao dieu kien cho d i u tu phat trien ngudn dien De tao d i m b i o hieu q u i kinh doanh PVPS eIn dau tU, trang edng bang canh tranh giCfa cic loai hinh nha m i y bj dung cu ehuyen dung, x i y dUng doi ngu chuyen dien, khuyen khich d i u tu eac d u I n dien sOf dung nang gia ky thuat manh, de m d rpng cung cap djch vu bao lupng sach, can co quy dinh phu hpp ve thue, ve b i o ve dudng sifa chOa cho cac n h i m i y dien khac c l moi trudng nham d i m b i o cic chi phi ve t i c dong ddi nudc, n i n g cao hieu q u i kinh t l nhd qui md, giam chi vdi moi trudng dupe phin I n h day du v i o g i l dien phi va g i l m g i l djch vu Can t i l p tue d i m phan vdi cic Dong thdi, cac nha may cin chu dpng thifc hien eic giii p h i p gilm chi phi d l tang nang canh tranh, ning cao hi§u q u i hoat ddng n h i s i n x u l t gdc de giam d i n p h i n viec ciia phia nudc ngoai, n i n g cao ty le ndi dja de g i l m ehi phf b i o dudng sifa chOa cho dan vj van h i n h Quin ly chi phf nhien lieu khf: Kiln nghi hoa g i l khi; Q u i n ly chi phi d i u tU: Q u i n IJ giai doan dau tu nghien cdu, I p dung cic bien p h i p ky thuat de tdi Uu hda chat che se giup g i i m suat d i u tU, g i i m chi phf ed dmh quy trinh sin xult, t i l t kiem nhien lieu tieu thu Quan ly ehi phi van h i n h va b i o dudng sUa chda: Xay dung mdi quan he vdi nha eung cap de d i p u'ng kjp thdi v l t t u can thay the, g i l m thii tuc tim hieu, g i i m ehi phf duf phdng vat tU; xac djnh danh muc vat t u dung chung, sdm thong n h l t va ky k i t thda thuan hpp t i c dung chung v i t tU giOa Petrovietnam va EVN; cd ke Viec d i u t u c i c nha m i y nhiet dien sau nen suf dung edng nghe, thiet b| tUdng tU eie nha m i y hien cd d l d i m b i o tinh ddng bp, g i l m chi phi v i n hanh bao dudng sda chUa cd dinh (chi phf dau tU m i y mde thiet bj chuyen dung phuc vu sifa chu'a b i o dudng, ehi phf du phdng v i t tu) Tdi lieu tham khao hoach d u phdng vat tU phu hpp, t i l t kiem ehi phf, ddng thdi d i m b i o an t o i n ky t h u i t Kiln nghi giao PVPS PV Power Bdo cdo tdi chinh eda PV Power vd cdc thUc hien th^m djeh vy mua sIm v i t tU de hinh t h i n h nhd mdy dien thuoc Petrovietnam (Deloitte Tohmasu kho v i t t u chung n h i m g i l m sd lupng v a t t u d u phdng; kiim todn) 2009 - 2013 CO CO c h i gan t r i c h nhiem ciia PVPS vdi su van hanh an t o i n , tin eay eda cic nha miy PVPS cd the ky hpp dong trpn gdi (full scope) djch vu vat tU, sda chOa bao dudng eho cic n h i m i y dien vdl PV Power, thay vi ky hdp ddng neng vdi tUng nha may nhU hien Dieu PV Power Bdo cdo kit qud thUc hiin ki hogch sdn xudt kinh doanh cua PV Power vd cdc nhd mdy diin thuoc Petrovietnam 2009 - 2013 Tip d o i n Dien lUc Viet Nam (EVN) Bao cdo tai cho phep PVPS chu dpng hdn, t u nghien cdu va i p chinh dd dUOc kiem todn cua cdc nhd mdy dien thuoc EVN dung bien phap phu hpp de q u i n ly chi phf v a t t u n h i m 2013 Increase the competitiveness of Petrovietnom's gas turbine power plant projects in Vietnam competitive generation market Phan Thi My Hanh Vietnam Petroleum Institute Summary Petrovietnom's gas turbine power plants are facing a big challenge from Vietnam Competitive Generation Market (VCGM), especially where the regulations of VCGM are inadequate In order to achieve their financial targets, these power plants should not only make recommendations to the government for improvement of the VCGM's regulations but also find the way to manage costs effectively and strengthen their competitive advantage In this article, the author analyses the difficulties of Petrovietnom's existing gas turbine power plants in the VCGIVI and suggests some measures for improvement of investment efficiency Key words: Vietnam Competitive Generation Market, PPA, Contracts for differences 62 DJiuKHl-sdi: ... i y nhiet di^n khf cOa Petrovietnam dang g i p p h i i tham gia thi trudng phat dien eanh tranh v l de x u l t mot sd giai o h i p n h i m n i n g cao k h i n i n g canh tranh, tang hieu Hinh... vdi g i i cao, bat Ipi canh tranh tren thj trUdng p h i t dien canh tranh phii chio gia theo chi phi bien ddi de dupe huy ddng 2.1.2 Tieu hao nhien lieu Cae nha m i y nhiet dien khf eda Petrovietnam. .. trudng p h i t dien canh tranh chua hoan t o i n d i m b i o suf k h i c h quan cd ehe mua b i n dien Hoat ddng thj trudng p h i t dien eanh tranh, cic nha m i y dien cOa Petrovietnam p h i i ddi