I T N G DUNG MO HINH TRIEN KHAI CHU'C NANG CHAT LlTOfNG TICH HQfP TRONG LU^A CHON NHA CUNG CAP XANH
Do Anh Du-c
Vien Thuang mgi vd Kinh tS Quoc te, Trudng Dqi hgc Kinh ti Quoc ddn Email: [email protected]
Ngay nhan: 10/7/2020 Ngay nhan ban sua' 30/8/2020 Ngay duyet dang: 05/9/2020
Tdm t§t:
Lua chgn chon vd phdn nhom nhd cung cdp xanh Id mdt nhiem vu quan trgng cua cdc doanh nghiap de gidm chi phi vd tdng khd ndng cgnh tranh cho hdng hda. De xu ly su khdng chac chan vd ddng cua vdn dephdn khuc nhd cung cdp. nghien ciru ndy di xudt mo hinh triin khai chuc ndng chdt luang (QFD) tich hap phuang phdp diim ly tudng (TOPSIS) di img dung trong lua chon nhd cung cdp xanh tic cdc khia cgnh ciia ndng luc vd su san sdng, lien quan den cdc vdn de moi trudng. Md hinh duae di xudt dd duae sic dung di di ddnh gid vd lua chon nhd cung cdp xanh cho mdt doanh nghiep sdn xudt. Kit qud img dung md hinh dd phdn dnh duae nhii-ng Igi the vd khd ndng dp dung ciia phuang phdp di xudt.
Til- khoa: QFD, TOPSIS, nha cung d p xanh.
Ma JEL: D7, D22, D81, H32, L2.
Applying a new intergrated quality function deployment approach for green supplier selection
Abstract
Green supplier selection and segmentation are crucial tasks of companies to reduce the costs and increase the competitiveness for goods To handle the uncertainty and dynamicity of the supplier segmentation problem, this study proposes a model of quality function deployment (QFD) intergrated with technique for order preference by similarity to ideal solution (TOPSIS) approach from the aspects of capability and willingness, with respect to environmental issues The proposed model has been used to evaluate and select green suppliers for a manufacturing company. The results of the model application have reflected the advantages and applicability of the proposed method.
Keywords: Quality function deployment, TOPSIS, green supplier JEL Codes: D7, D22, D81, H32, L2
1. Gidi thieu chung
Lua chon nha cung cap pbii hgp cd vai trd quan trgng gdp phan giup doanh nghiep giam thieu chi phi san xuat va nang cao bi?u qua boat dgng cua doanh nghiep (Yazdani & cgng sy, 2016). Nhan thirc dugc tam quan frgng cua viec lya chgn nha cung cap, da cd nhieu nghien cuu frong nude va qudc te dua ra cac tieu chuan va md binh ra quylt dinb da tieu chuan khac nhau de danh gia va lya chgn nh& cung cap. Tuy nhien.
cac nghien cim vl lya chgn nha cung cap hien chii yeu tap trung vao danh gia hi$u qua kinh te cua cac nha cung d p ban la xem xet cac cac tieu chuIn lien quan mdi frudng va xa hdi (Kumar & cgng su, 2014). Trong bdi canh chinh phii va ngudi tieu dung cd sy gia tang nhan thiic ve bao ve mdi trudng, lya chgn va phan nhdm nha cung d p xanh cd vai frd quan frgng giiip cac cdng ty dat dugc sy phat trien ben vimg. Lya chgn cac nha cung cap phii hgp se giup cac doanh nghiep dam bao chat lugng san pham, giam chi phi nguyen
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lieu til dd gdp phin thda man tdt hon nhu ciu cua khach hang va nang cao nang lye canh franh cua doanh nghiep tren thi trudng.
Be lya chgn cac nha cung cap, bdn canh cac tieu chuIn vl kinh tl nhu gia, chi phi van chuyin, chat lugng san pham, thoi gian giao hang,... (Wang & cdng sy, 2017; Junior & cgng sy, 2016), cac tieu chuIn vl mdi trudng va xa hdi cirng cin dugc xem xet trong qua trinh ra quyet dinh nhu thilt kl xanh, he thdng quan ly mdi trudng, kiem soat d nhilm, san phim xanh, hieu qua nang lugng va nguon luc, dao dire,... (Zhu & cgng sy, 2010; Lee & cong sy, 2015; Awasthi & cgng sy, 2010; Do & cgng su, 2019). Do do muc tieu ciia nghien ciru nay la phat tiien md hinh friln khai chirc nang chit lugng tich hgp frong lya chgn nha cung cap xanh bJ cac khia canh cua kha nang va sy sSn sang, lien quan den cac van dl mdi trudng.
Phan tiep theo ciia bai viet se frinh bay tdng quan nghien ciiu ve cac tieu chuan va phuang phap cac md bmh ra quyet dinh khac nhau de danh gia va lya chgn nha cung d p xanh. Phin 3 cua nghien cuu de xuat md hinh trien khai chiic nang chat lugng tich hgp dugc de xuat la md hinh friln khai chiic nang chat lugng tich hgp vdi TOPSIS de danh gia va phan nhdm nba cung cap xanh. Trong pbin 4 cua nghien ciiu, md hinh frien khai chiic nang chit lugng tich hgp vdi TOPSIS dugc img dung dl danh gia va lya chgn nha cung cap xanh cho mdt doanh nghiep san xuat. Cudi cung la phan 5, ket luan cac ket qua dat dugc cua dl xuat nghien cuu,
2. Tong quan nghien cihi
Nhan thiic dugc tam quan frgng cua viec danh gia va lya chgn nha cung cap xanh, da cd nhieu nghien ciiu dua ra cac tieu chuan va phuang phap danh gia khac nhau
Ddi vdi cac phuong phap truyen thdng, viec danh gia nha cung cap chu yeu dya fren cac tieu chuan ve kinh te, nhu la chi phi (Junior & Carpinefri, 2016; Yazdani & cgng su, 2016; Wang & cgng sy, 2017), chat lugng (Heidarzade & cdng sy, 2016; Yazdani & cgng sy, 2016), tinh linh boat (Tseng & Chiu, 2013;
Hashemi & cgng su, 2015; Heidarzade & cdng su, 2016), cdng nghe (Hashemi & cdng sy, 2015; Heidarzade
& cdngsy, 2016), tbdi gian giao hang (Memon & cdng sy, 2015), kba nang tai chinh (Buyiikdzkan va Cif?i.
2012; Yazdani & cgng sy, 2016)... Cac nghien ciiu nay chua quan tam den cac tieu chuan ve mdi trudng.
Trong each tiep can ben vung, de danh gia va lya chgn nha cung cap, cac doanh nghiep can quan tam khdng cbi cac tieu chuan ve kinh te ma con cac tieu chuan ve moi trudng va xa hgi. nhu cac cam ket ve mdi trudng, frach nhiem xa hgi (Buyiikdzkan & Cif?U 2012; Tavana & cdng su, 2016), cac van de dao diic va tuan thu phap luat (Tavana & cdng su, 2016), cdng nghe xanh (Zhu & cgng sy, 2007). san pham xanh (Zhu
& cgng sy, 2010; Awasthi & cdng sy, 2010), thiet ke xanh (Govindan & cdng sy, 2013; Yazdani & cgng sy, 2016; Wang & cgng sy, 2017), he thong quan ly mdi trudng xanh (Tseng va Chiu, 2013; Govindan & cdng sy, 2013; Yazdani & cgng sy, 2016; Wang & cdng su, 2017)... Cac nghien ciiu nay cho thay, de danh gia va lya chgn nha cung cap can sir dyng ca cac tieu chuan dinh tinh va dinb lugng. Trong dd, cac tieu chuan dinh tinh thudng dugc danh gia mdt each cam tinh, chu quan. Do dd, boat dgng nay gap nhieu khd khan trong qua trinh lugng hda tac ddng ciia cac tieu chuan dinh tinh.
D I XU ly dugc nhirng khd khan trong viec xac dinh va lugng boa tac dgng ciia cac tieu chuan dinh tinh, nhilu nghien ciiu da trinh bay cac md hinh ra quyet dinh khac nhau de danh gia va lya chgn nha cung cap xanh, frong dd phai ke den: phuang phap phan tich tbii bac (AHP) (Deng & cdng sy, 2014; Kilincci & Onal, 2011), quy trinh phan tich mang (ANP) (Hsu & Hu, 2009), phuong phap dilm ly tudng (TOPSIS) (Yazdani
& Payam, 2015), md hinh QFD (Lima-Junior & Carpinetti, 2016; Dursun & Karsak, 2013); md hinh triln khai chiic nang chat lugng mdi dya fren ham diem sd, bam cbinb xac va ham chac chan dudi mdi trudng ciia tap "neufrosophic" khoang (Do & cdngsy, 2019); va cac phuang phap tich hgp (tich hgp AHP va TOPSIS, AHP va QFD, QFD va MCDM; AHP-TOPSIS-QFD). Tuy nhien, so lugng cac nghien cuu phat triln md hinh triln khai chiic nang chat lugng ket hgp vdi TOPSIS frong giai quyet cac bai toan ra quyet dinh da tieu chuIn con rit han che, dac bi?t frong danh gia va lya chgn nha cung cap xanh. Ben canh dd, cung cd mdt sd lugng ban chi six dyng tich hgp cac tieu chuan ve kinh te, xa hgi va mdi trudng trong danh gia va lua chgn nha cung cap.
3. M6 hinh trien khai chijc nang chat lirgng tich hgp v ^ TOPSIS
Nghien cuu nay d l xuit md hinh friln khai chirc nang chit lugng tich hop dugc dl xuat la md hinh trien
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khai chiic nang chat lugng tich hop vai TOPSIS dS danh gia va phan nhom nha cung cSp xanh. Cac buoc cua mo hinh nhu sau:
5,7. Btric 1: Xdc dinh trgng s6 cua "WHATs"
Bat w„ =(a„,i„,c„;fiT„),; = l , . . . , t , r = l_..._n la trpng s6 duoc xac dinh bdi hoi d6ng ra quySt dinh D, cho tieu chuan "WHATs" C . Gia tri trong s6 trung binh w, = (a^,b„c/,B!J cua tieu chuSn C, duoc xac dinh nhu sau:
w, = ( l / n ) ® ( w , , © » , , © . . . © » „ ) (I)
trong do a, =(1/n)^l^a„,b, =(\/n)'^lfi,,c, = ( l / n ) J"_|C,„(!7., = inin(a7„).
3.2. Bu&c 2: Xac dinh gid trj "WHATs"-"HOWs"
B f Kji =(<^,,,'^,jnfii,'^,j,) > > = h...,k,j=l,...,m, r = l,...,n, la gia tri ty le duoc xac dinh boi nguoi ra quyft dinh D,, cho tieu chujn "WHATs" C, va tieu chuin "HOWs" Cj. Gia tri ty le trung binh
'»• ~ (''»'"il'fi/'^r)' '^° * e dugc tinh nhu sau:
r,j=(\ln)®(r,^,Br,^,(S...®rJ (2)
Uong do d, =-'^d,„, e,, =^'fe,„, f,j=-Yf,„, va 27, = inin(aT ) . 3.3. Bu&c 3: Xdc dinh trgng sd cua "HOWs"
Trong so ciia "HOWs" dugc xac djnh boi nhan gia tri ty le trung binh r^ voi trgng so cua "WHATs" vi;
nhu sau:
»',,=-|;®[(r„®w,)e...e(^,,®H-j] (3)
3.4. Bu-dc 4: Ddnh gid cdc nhd cung cdp tiem ndng difa trin tieu chudn "HOWs"
Dat ^'S',,^, =(g;y,,\,,A:,y,;£(7,y,), h = \,...,s, j ^\,...,m, t = \,...,n, la gia frj ty le phii hgp dugc xac dinh cho cac nha cung cap xanh Ai,, bdi hdi ddng ra quyet dinh D,, cho mdi tieu chuan "HOWs" Cj. Gia fri tmng binh ty le PSj^j = {g^^, ^,y, k,^j), cd the dugc tinh nhu sau:
PS„,=(l/n)<S(sr„^,@sr„,,®...(Bsr,^„} (4)
trong do g,,, = - y ' g / „ , , hi„ ^-S^hj,, hj = - y f c , „ , and 5Tpj = min(a7, ) n^ n ^ « " , , 3.5. Bu&c 5; Xdc dinh gid tri trung binh ty le co trgng so ciia nhd cung cdp xanh
Gia tri trung binh ty le co trgng so Tj. dugc xac dinh boi tich ctia gia tri trung binh ty le cua nha cung cap xanh PSj^ voi trgng so cua "HOWs" W^ nhu sau:
«[(re„®»;)a B(ra..«W.)], h = \,...,s,j = \,...,m. (5)
Bang 1, Gia tri trong so trung binh cua cac tieu chuan "WHATs"
"WHATs"
Wi Wi
w, w.
Ws
Hpi d6ng ra quyet djnh Qi
AI VI 1 VI I
AI
a
VI VI VI I
a
VI AI VI 1 1Wi
(0.70, 0.83, 0.97;0.90) (0.60, 0.77, 0.93:0.90) (0.47, 0.63, 0 80:0.80) (0.47, 0.63, 0.80:0.80) (0.40, 0.50, 0.60:0.80)
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"HOWs"
W,
Wi
Wi
w,
w.
Banj
"WHATs"
ft ft fts H, ft
Hi
ft ft ft ft ft fti ft ft ft ft ft ft ft ft ft ft ft ft ft ft ft ft ft ft
2, Gia tri trung binh ty II "HOWs' Hpi dong ra quyet dinh gi
H H VH H H M H H M H M M M H H H H M H M M VH M H VH H H H H H
a
H H H VHH H M VH
H H L H L M H M H H H H H H H VH H H H H VH VH
Qa H M H H H M H H VH
M M M L H H H H M H H H M H H VH VH H VH
H H
-"WHATs"
1]
(0.50,0.70,0.90:0.90) (0.43,0.63,0.83:0.80) (0.60,0.77,0.93:0.90) (0.60,0.77,0.93:0.90) (0.50, 0.70, 0.90:0.90) (0.37, 0.57, 0.77:0.80) (0.43,0.63,0.83:0.80) (0.60,0.77.0 93:0.90) (0.53, 0.70, 0.87:0.80) (0.43,0.63,0.83:0.80) (0.27,0.43, 0.60:0.70) (0.37,0.57, 0.77;0.80) (0.23, 0.37, 0.50:0.70) (0.43.0.63,0.83:0.80) (0.50, 0.70, 0.90:0 90) (0.43.0.63.0.83,0.80) (0.50. 0.70. 0.90:0 90) (0.37,0.57,0.77.0.80) (0.50,0.70,0.90:0.90) (0.43,0.63, 0.83:0.80) (0.43,0.63,0.83:0.80) (0.53,0.70,087:0.80) (0.43, 0.63, 0.83:0.80) (0.60, 0.77, 0.93,0.90) (0 70, 0.83, 0.97:0.90) (0.60,0.77,0.93:0.90) (0.50, 0.70, 0.90:0.90) (0.60, 0.77, 0.93:0.90) (0 60, 0.77, 0.93:0.90) (0.60, 0.77, 0.93:0.90)
3.6. Bu&c 6: Xac dinh ^ '^ •'''* vd '''
Giiii phap t6i uu duong (FPIS, T ) va giai phap t6i iru am (FNIS, T') dugc xac dinh boi:
r=(l,l,l;«T„} (6)
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Bang 3. Gia trj trung binh trong so cua "HOWs"
HOWs fti ft2 ft ft
ftj
ft
m
(0.246, 0.432, 0.670 (0.262, 0.460, 0.714 (0.275, 0.474, 0.728 (0.274, 0.470, 0.720 (0.237, 0.429, 0.675 (0.234, 0.427, 0,675
0.7) 0.8) 0.8) 0.8) 0.7) 0.8)
r = (0,0,0; £(7,,) (7)
Khoang each cua mdi lya chgn T^,h = \,,.,,s tir 7* va 7"" dugc tinh bdi:
d:=lt/Ji^' (8) d:= j-^iz-ry
(9)trong do d^ dai dien cho khoang each ngdn nhat cua lya chgn T^, va i/; dai dien cho khoang each xa nhat cua lya chgn 7],.
3.7. BiTffc 7: Xdc dinh he sd chat che
H? sd chat che ciia mdt lya chgn thudng dugc su dung de xip bang nha cung cap, dugc tinh nhu sau:
ca=—^ (10)
,. dh+dh ^ ^ J.
4. Ung dung md hinh ra quyet dinh da tieu chuan tich hgp trong lua chon nha cung cap xanh Trong phan nay, md hinh trien khai chiic nang chat lugng tich hop vdi TOPSIS dugc su dung de danh gia va lua chgn nha cung cap xanh cho mdt doanh nghiep san xuat. Sau khi danh gia so bd, 04 nha cung cap xanh dugc lya chgn de danh gia, bao gdm NCC^, NCC^, NCC^ vd NCC^. Mdt hdi ddng gdm 03 ngudi ra quyet dinh Q|i Q2 va Q^ dugc thanh lap de xac dinh nha cung cap pbii hgp.
Trong nghien ciiu nay, 05 tieu chuan "WHATs" dugc xem xet bao gdm; san pham xanh (IV^), gia (W^), giao hang diing gid (^3), hieu qua cua hanh ddng khac phuc (W^), thiet ke xanh (fV^). Cac tieu chuan
"HOWs" dugc su dung trong nghien cim nay bao gdm: kinh nghiem frong ITnh vyc (H^), cam ket ve sire khde va an toan cua nhan vien (//,), chimg nhan he thdng chat lugng (H^), frach nhiem xa hdi (H^), dn dinh tai chinh (H.), kha nang quan ly don hang tryc tuyen (H^).
Cac budc iing dung cda md hinh ra quyet dinh da tieu chuan tich hgp trong lua chgn nha cung cap xanh nhu sau:
4.1. Bu&c 1: Xdc dinh trgng sd cua "WHATs"
Trgng sd cua cac tieu chudn "WHATs" dugc xac dinh sir dung bien ngdn ngir, frong dd mdi gia trj ciia ngdn ngu cd thi dugc md phdng b^ng tap md hoac tap neutrosophic (Zimmermann, 1991), cu the V = {Ul, Ll, I, VI, AI}, trong do Ul = Khdng quan trgng = (0.1, 0,2, 0.3; 0.6), LI - Kem quan trgng = 0.3, 0.4, 0.5;
0.7), I = Quan trgng = (0.4, 0.5, 0.6; 0.8), VI = Rat quan trgng = (0.5, 0.7, 0.9; 0.9), va AI - Tuyet ddi quan trgng = (0.8, 0 9, 1.0; 0,9). Gia tri frgng sd va trgng s6 frung binh ciia cac tieu chuan "WHATs" tir 03 ngudi ra quylt dinh dugc xac dinh bdi phuong frinh (1) va dugc frinh bay frong Bang 1.
4.2. Bir&c 2: Xdc dinh gid tri ''HOWs"-"WHATs"
Gia fri ty le mdi lien he "HOWs"-"WHATs" dugc xac djnh bdi ra hgi ddng ra quylt dmh thdng qua sir dung tap ngdn ngir S= {VL, L, M, H, VH} trong dd VL = Rat th§p = (O.I, 0.2, 0.3; 0.6), L = Th5p = (0.2, 0.3, 0.4; 0.7), M = Trung binh - (0.3, 0.5, 0.7; 0.8), H - Cao = (0.5. 0.7, 0.9; 0.9), va VH = Rdt cao = (0.8,
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Bang 4. Gia tri
"HOWs"
fti
a
ft
ft
ft
ft
Nhacung cap xanh WCCi NCC, NCC, NCC4 NCC, NCCz NCC, NCC, NCC, NCC2 NCC, NCC, NCC, NCCi NCC, NCC, NCC, NCCi NCC, NCC, NCC, NCCi NCC, NCC,
ty le ciia ca nha cung cap irng vol Hoi dong ra quyet dinh Si
H VH
H H M H L M VH H H L H H H H H L H H VH
H VH
M
a
H H H VHH H M H H H M M M H H VH VH H H H H M H H
a
H VH
H H M VH
M M H VH
H M H H H H VH
M VH M H H H H
ic tieu chuan "HOW "
l j
(0.50,0.70. 0.90:0.90) (0.70,0.83, 0.97:0.90) (0.50,0.70, 0.90:0 90) (0.60,0.77,0.93:0.90) (0.37,0.57, 0.77:0.80) (0.60,0.77, 0.93:0.90) (0.27, 0.43, 0.60:0.70) (0.37, 0.57, 0.77:0.80) (0.60. 0.77. 0.93:0.90) (0.60,0.77. 0.93:0.90) (0.43,0.63,0.83:0.80) (0.27,0.43,0.60:0.70) (0.43,0.63,0.83:0 80) (0.50,0.70, 0.90:0.90) (0.50,0.70, 0.90:0.90) (0.60,0.77,0.93:0.90) (0.70,0.83,0.97:0.90) (0.33,0.50,0.67:0.70) (0.60,0.77,0.93:0.90) (0.43, 0.63, 0.83:0.80) (0.60, 0.77, 0.93:0.90) (0.43, 0.63, 0.83,0.80) (0.60, 0.77, 0.93:0.90) (0.43,0.63,0.83:0.80)
0.9, l.O; 1.0).
Bang 2 trinh bay gia fri frung binh ty le "HOWs"-"WHATs" dugc tinh bdi phuang frinh (2).
4.3. Budc 3: Gid tri trung binh trpng sd cua "HOWs"
Bang 3 trinh bay gia tri frung binh n-gng sd ciia HOW" sii dung phuang trinh (3).
4.4. Budc 4: Ddnh gid cdc nhd cung cdp xanh dua tren cdc tieu chudn "HOWs "
Sir dung phuang frinh 4. gia tn ty le ciia cac nha cung cap xanh img vdi mdi tieu chuan "HOWs" dugc trinh bay frong Bang 4.
4.5. Bir&c 5: Xdc dinh gid tri ty le trung binh cd trgng so
Bang 5 trinh bay gia frj ty Id trung binh frgng sd sii dung phuong frinh (5).
4.6. Bu&c 6:Xdc dinh ^ ''^ '^'' vd ^"
Bang 6 xac dinh khoang each cua cac nha cung cip xanh bi S' va S~ sir dyng phuang trinh (6) - (9).
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Bang 5. Gia tri ty le trung binh cd trong so ciia moi tieu chuan xanh
Nha cung cap xanh 71, A'CCi (0.135, 0.318, 0.619; 0,7)
A'CC2 (0.135, 0.315, 0.609; 0.7) NCCj (0.122, 0.298, 0.591; 0.7) NCC^ (0.114, 0.283, 0.568; 0.7)
Bang 6. So ludng khoang each ciia cac nha cung cap xanh
Cac nha cung cap xanh d^ d~
WCCi ~ 1.1656 ^ ' ~ ' 0.7087
A'CC2 1.2600 0.6989 NCCi 1.2701 0.6730 NCC4 1.2730 0.6447
Bang 7. He so ch|it che cua cac nha cung cap xanh
Nha cung cap xanh He so chat che Xep h^ng
~NCCi 0.3781 i A'CC: 0.3568 2 NCCi 0.3463 3 NCC4 0.3362 4
4.7. Bu&c 7: Xdc dinh h^ sd chat che vd xip hang cdc lua chpn
Bang 7 frinh bay he sd chat che ciia cac nba cung cap xanh sir dung phuong trinh (10), Ket qua cho thay nha cung cap xanh NCC^ la lya chgn tdt nhat vi cd he so chat che Idn nhat. Vi vay, thii tu ciia cac nha cung cap xanh la 7VCC,, A^CC^, NCC^, NCC^.
5. Ket luan
Nghien cihi nay da phat tnen md hinh trien khai chiic nang chat lugng tich hgp vdi phuong phap diem ly tudng TOPSIS va iing dung de danh gia va phan nhdm nba cung cap xanh thdng qua viec sir dung cac kha nang va tieu chi sSn sang de cung cap. Day la mgt cdng cu thiet thyc cho lya chgn va phan khuc nha cung cdp xanh. Md hinh dl xudt da dugc ap dyng de phan khiic cac nha cung cap xanh ciia mdt cdng ty de minh hga cho kha nang img dung cua nd. Dya tren ket qua thu dugc, cdng ty cd the xay dyng cac chien luge khac nhau dl xir ly cac phan khiic xanh khac nhau theo phuong phap dl xudt. Trong tuang lai, mo hinh nay cung cd thi ap dung d l giai quylt cac vdn d l ra quylt dinh ra tieu chuan khac nhau frong thuc tiln. Ngoai ra, viec kit hgp md hinh triln khai chiic nang chat lugng tich hgp vdi phuong phap diem ly frrdng TOPSIS da gdp phdn md rgng pham vi iing dyng cua md hinh tnen khai chiic nang chat lugng frong giai quyet cac bai toan ra quyet dinh da tieu chuan tren thyc te.
Sd 279 thdng 9/2020 10^ klilliteiilill lllefl
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S6 279 thing 9/2020 IM killit|Anm
Tap cU Hal hanh qua mang linn Dim lien I if I \am
