{"id":2334,"date":"2026-01-21T03:34:36","date_gmt":"2026-01-21T03:34:36","guid":{"rendered":"https:\/\/www.pto-drive-shafts.com\/?p=2334"},"modified":"2026-01-30T05:48:32","modified_gmt":"2026-01-30T05:48:32","slug":"engineering-the-heart-of-the-cold-chain-drive-shafts-for-spiral-freezers","status":"publish","type":"post","link":"https:\/\/www.pto-drive-shafts.com\/vi\/application\/engineering-the-heart-of-the-cold-chain-drive-shafts-for-spiral-freezers\/","title":{"rendered":"Thi\u1ebft k\u1ebf c\u1ed1t l\u00f5i c\u1ee7a chu\u1ed7i cung \u1ee9ng l\u1ea1nh: Tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng cho t\u1ee7 \u0111\u00f4ng xo\u1eafn \u1ed1c"},"content":{"rendered":"
V\u1ecb tr\u00ed:<\/strong> Bury St Edmunds, Suffolk, V\u01b0\u01a1ng qu\u1ed1c Anh | Ti\u00eau chu\u1ea9n:<\/strong> ISO 9001:2015 \/ BRCGS<\/section>\n
\"Tr\u1ee5cTu\u00e2n th\u1ee7 m\u00f4i tr\u01b0\u1eddng r\u1ee7i ro cao c\u1ee7a ng\u00e0nh ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m c\u00f4ng nghi\u1ec7p, m\u00e1y l\u00e0m l\u1ea1nh d\u1ea1ng xo\u1eafn \u1ed1c l\u00e0 \u0111i\u1ec3m ngh\u1ebdn trong s\u1ea3n xu\u1ea5t. S\u1ef1 c\u1ed1 \u1edf b\u1ed9 truy\u1ec1n \u0111\u1ed9ng tr\u1ed1ng ch\u00ednh c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1ed5n th\u1ea5t \u0111\u00e1ng k\u1ec3 b\u1ed9t nh\u00e0o, c\u00e1 ho\u1eb7c th\u1ef1c ph\u1ea9m \u0103n li\u1ec1n. C\u00f4ng ty pto-drive-shafts.com Ltd. t\u1ea1i Anh kh\u00f4ng ch\u1ec9 b\u00e1n \"ph\u1ee5 t\u00f9ng\"; ch\u00fang t\u00f4i chuy\u00ean ph\u00e1t tri\u1ec3n c\u00e1c gi\u1ea3i ph\u00e1p m\u00f4-men xo\u1eafn \u0111\u1ea3m b\u1ea3o ch\u00fang c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t, t\u1eeb nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng -40\u00b0C \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 kh\u1eed tr\u00f9ng v\u00e0 r\u1eeda s\u1ea1ch +85\u00b0C.<\/section>\n
\n
\ud83d\udc68\u200d\ud83d\udd27 Nh\u1eadt k\u00fd K\u1ef9 s\u01b0 tr\u01b0\u1edfng (X\u01b0\u1edfng Suffolk):<\/strong>
\n\u201cT\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn \u200b\u200b\u0111i\u1ec1u n\u00e0y qu\u00e1 nhi\u1ec1u l\u1ea7n t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y c\u1ee7a ch\u00fang t\u00f4i \u1edf Yorkshire v\u00e0 Midlands. \u0110\u1ed9i s\u1eeda ch\u1eefa thay th\u1ebf tr\u1ee5c ban \u0111\u1ea7u b\u1ecb h\u01b0 h\u1ecfng b\u1eb1ng tr\u1ee5c th\u00e9p carbon ti\u00eau chu\u1ea9n v\u00ec n\u00f3 'c\u00f3 s\u1eb5n'. Hai tu\u1ea7n sau, n\u00f3 l\u1ea1i g\u00e3y. T\u1ea1i sao? Do t\u00ednh gi\u00f2n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Th\u00e9p th\u00f4ng th\u01b0\u1eddng m\u1ea5t \u0111\u1ed9 d\u1ebbo khi nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi -20\u00b0C. Khi tr\u1ee5c v\u00edt b\u1eaft \u0111\u1ea7u ho\u1ea1t \u0111\u1ed9ng\u2014v\u01b0\u1ee3t qua ma s\u00e1t t\u0129nh c\u1ee7a b\u0103ng t\u1ea3i n\u1eb7ng d\u00e0i 500 m\u00e9t\u2014l\u1ef1c t\u00e1c \u0111\u1ed9ng khi\u1ebfn th\u00e9p v\u1ee1 v\u1ee5n nh\u01b0 th\u1ee7y tinh. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao d\u00f2ng s\u1ea3n ph\u1ea9m S-700 c\u1ee7a ch\u00fang t\u00f4i s\u1eed d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 316L \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh ho\u1eb7c th\u00e9p kh\u00f4ng g\u1ec9 42CrMo4 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn v\u00e0 c\u00f3 ch\u1ee9ng nh\u1eadn ch\u1ecbu va \u0111\u1eadp \u1edf nhi\u1ec7t \u0111\u1ed9 \u0111\u00f4ng l\u1ea1nh.\u201d<\/div>\n<\/section>\n
\n

Nguy\u00ean l\u00fd v\u1eadt l\u00fd c\u1ee7a s\u1ef1 h\u1ecfng h\u00f3c: T\u1ea1i sao c\u00e1c tr\u1ee5c th\u00f4ng th\u01b0\u1eddng l\u1ea1i b\u1ecb h\u1ecfng trong t\u1ee7 \u0111\u00f4ng?<\/h2>\n

Vi\u1ec7c \u1ee9ng d\u1ee5ng tr\u1ee5c Cardan (tr\u1ee5c kh\u1edbp v\u1ea1n n\u0103ng) trong h\u1ec7 th\u1ed1ng b\u0103ng t\u1ea3i xo\u1eafn \u1ed1c, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong b\u1ed9 truy\u1ec1n \u0111\u1ed9ng tang tr\u1ed1ng ch\u00ednh, t\u1ea1o ra m\u1ed9t \u201cB\u1ed9 ba \u1ee9ng su\u1ea5t\u201d \u0111\u1ed9c \u0111\u00e1o:<\/p>\n

    \n
  1. S\u1ed1c nhi\u1ec7t v\u00e0 s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (CTE):<\/strong> Trong c\u00e1c chu tr\u00ecnh CIP (L\u00e0m s\u1ea1ch t\u1ea1i ch\u1ed7), tr\u1ee5c gi\u00e3n n\u1edf nhanh ch\u00f3ng. N\u1ebfu dung sai c\u1ee7a kh\u1edbp n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n cho h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t (CTE) n\u00e0y, c\u1ee5m kh\u1edbp tr\u01b0\u1ee3t s\u1ebd b\u1ecb k\u1eb9t. Khi t\u1ee7 \u0111\u00f4ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i, kh\u1edbp tr\u01b0\u1ee3t b\u1ecb k\u1eb9t s\u1ebd truy\u1ec1n t\u1ea3i t\u1ea3i tr\u1ecdng d\u1ecdc tr\u1ee5c v\u00e0o c\u00e1c \u1ed5 tr\u1ee5c h\u1ed9p s\u1ed1, g\u00e2y ra h\u01b0 h\u1ecfng nghi\u00eam tr\u1ecdng.<\/li>\n
  2. Hi\u1ec7n t\u01b0\u1ee3ng \u201cTr\u01b0\u1ee3t-d\u00ednh\u201d:<\/strong> D\u00e2y \u0111ai xo\u1eafn \u1ed1c, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi b\u1ecb m\u00e0i m\u00f2n, c\u00f3 ma s\u00e1t t\u0129nh cao. M\u00f4-men xo\u1eafn kh\u1edfi \u0111\u1ed9ng th\u01b0\u1eddng g\u1ea5p 3,5 l\u1ea7n m\u00f4-men xo\u1eafn khi ho\u1ea1t \u0111\u1ed9ng.<\/li>\n
  3. T\u1ea5n c\u00f4ng \u0103n m\u00f2n:<\/strong> S\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa c\u00e1c axit th\u1ef1c ph\u1ea9m (axit lactic, axit citric) v\u00e0 c\u00e1c ch\u1ea5t t\u1ea9y r\u1eeda \u0103n m\u00f2n m\u1ea1nh \u0111\u00f2i h\u1ecfi nhi\u1ec1u h\u01a1n ch\u1ec9 l\u00e0 s\u01a1n.<\/li>\n<\/ol>\n

    Gi\u1ea3i ph\u00e1p c\u1ee7a ch\u00fang t\u00f4i: Tri\u1ebft l\u00fd \u201cNguy\u00ean kh\u1ed1i\u201d<\/h3>\n

    \u0110\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n v\u1ec7 sinh do C\u01a1 quan Ti\u00eau chu\u1ea9n Th\u1ef1c ph\u1ea9m Anh (FSA) v\u00e0 c\u00e1c cu\u1ed9c ki\u1ec3m \u0111\u1ecbnh BRCGS to\u00e0n c\u1ea7u y\u00eau c\u1ea7u, ch\u00fang t\u00f4i \u0111\u00e3 t\u1eeb b\u1ecf thi\u1ebft k\u1ebf m\u1eb7t b\u00edch h\u00e0n c\u1ee7a tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng cao c\u1ea5p d\u00f9ng trong ng\u00e0nh th\u1ef1c ph\u1ea9m v\u00e0 thay v\u00e0o \u0111\u00f3 \u00e1p d\u1ee5ng quy tr\u00ecnh ch\u1ebf t\u1ea1o tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng m\u1eb7t b\u00edch li\u1ec1n kh\u1ed1i.<\/p>\n

    B\u1eb1ng c\u00e1ch gia c\u00f4ng c\u00e0ng ch\u1eef U v\u00e0 m\u1eb7t b\u00edch t\u1eeb m\u1ed9t kh\u1ed1i th\u00e9p kh\u00f4ng g\u1ec9 nguy\u00ean kh\u1ed1i, ch\u00fang t\u00f4i \u0111\u00e3 lo\u1ea1i b\u1ecf c\u00e1c m\u1ed1i h\u00e0n - n\u01a1i sinh s\u00f4i ch\u00ednh c\u1ee7a vi khu\u1ea9n Listeria monocytogenes v\u00e0 l\u00e0 \u0111i\u1ec3m y\u1ebfu v\u1ec1 c\u1ea5u tr\u00fac d\u1ec5 g\u00e2y n\u1ee9t do m\u1ecfi.<\/p>\n<\/section>\n

    \n

    B\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt: D\u00f2ng s\u1ea3n ph\u1ea9m Cryo-Drive S-700<\/h2>\n

    D\u1eef li\u1ec7u sau \u0111\u00e2y th\u1ec3 hi\u1ec7n c\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n c\u1ee7a ch\u00fang t\u00f4i cho c\u00e1c th\u00e1p xo\u1eafn \u1ed1c ch\u1ecbu t\u1ea3i n\u1eb7ng (v\u00ed d\u1ee5: c\u00e1c s\u1ea3n ph\u1ea9m thay th\u1ebf t\u01b0\u01a1ng th\u00edch v\u1edbi JBT, GEA, Starfrost).<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    ID tham s\u1ed1<\/th>\nDanh m\u1ee5c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>\nGi\u00e1 tr\u1ecb\/Ti\u00eau chu\u1ea9n \u0111o l\u01b0\u1eddng<\/th>\nH\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng Anh \/ Ghi ch\u00fa<\/th>\n<\/tr>\n<\/thead>\n
    TS-01<\/td>\nM\u00f4-men xo\u1eafn \u0111\u1ecbnh m\u1ee9c (Mn)<\/td>\n12.500 Nm<\/td>\n9.220 lb-ft<\/td>\n<\/tr>\n
    TS-02<\/td>\nM\u00f4men xo\u1eafn m\u1ecfi (Mfat)<\/td>\n8.400 Nm<\/td>\nGi\u1edbi h\u1ea1n tu\u1ed5i th\u1ecd v\u00f4 h\u1ea1n<\/td>\n<\/tr>\n
    TS-03<\/td>\nM\u00f4-men xo\u1eafn ph\u00e1 v\u1ee1 (Mb)<\/td>\n32.000 Nm<\/td>\nH\u1ec7 s\u1ed1 an to\u00e0n 2,56<\/td>\n<\/tr>\n
    TS-04<\/td>\nG\u00f3c kh\u1edbp t\u1ed1i \u0111a<\/td>\n25\u00b0 (Li\u00ean t\u1ee5c)<\/td>\n35\u00b0 (T\u1ea1m th\u1eddi)<\/td>\n<\/tr>\n
    TS-05<\/td>\nT\u1ed1c \u0111\u1ed9 quay (T\u1ed1i \u0111a)<\/td>\n1.200 v\u00f2ng\/ph\u00fat<\/td>\nC\u00e2n b\u1eb1ng G6.3<\/td>\n<\/tr>\n
    TS-06<\/td>\nLo\u1ea1i Spline<\/td>\n\u0110\u01b0\u1eddng cong xo\u1eafn \u1ed1c DIN 5480<\/td>\nMod 3, Z=18<\/td>\n<\/tr>\n
    TS-07<\/td>\nV\u1eadt li\u1ec7u (\u00c1o gi\u00e1p)<\/td>\nTh\u00e9p kh\u00f4ng g\u1ec9 AISI 316L (EN 1.4404)<\/td>\nT\u00f4i luy\u1ec7n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh<\/td>\n<\/tr>\n
    TS-08<\/td>\nV\u1eadt li\u1ec7u (B\u1ed9 d\u1ee5ng c\u1ee5 Cross)<\/td>\n20CrMnTiH (T\u00f4i c\u1ee9ng b\u1ec1 m\u1eb7t)<\/td>\nV\u1edbi gio\u0103ng PTFE<\/td>\n<\/tr>\n
    TS-09<\/td>\n\u0110\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t<\/td>\nRa < 0,8 \u00b5m<\/td>\nHo\u00e0n thi\u1ec7n v\u1ec7 sinh<\/td>\n<\/tr>\n
    TS-10<\/td>\nPh\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/td>\n-45\u00b0C \u0111\u1ebfn +135\u00b0C<\/td>\nBao g\u1ed3m ph\u01b0\u01a1ng ph\u00e1p l\u00e0m l\u1ea1nh v\u00e0 l\u00e0m s\u1ea1ch b\u1eb1ng h\u01a1i n\u01b0\u1edbc.<\/td>\n<\/tr>\n
    TS-11<\/td>\nPh\u1ea7n m\u1edf r\u1ed9ng tr\u01b0\u1ee3t (La)<\/td>\n140 mm<\/td>\nB\u00f9 tr\u1eeb cho s\u1ef1 co gi\u00e3n do nhi\u1ec7t<\/td>\n<\/tr>\n
    TS-12<\/td>\nChi\u1ec1u d\u00e0i khi \u0111\u00f3ng (Lc)<\/td>\n850 mm<\/td>\nC\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh \u00b15mm<\/td>\n<\/tr>\n
    TS-13<\/td>\n\u0110\u1ed9 c\u1ee9ng xo\u1eafn<\/td>\n145 kNm\/rad<\/td>\n\u0110\u1ed9 c\u1ee9ng cao<\/td>\n<\/tr>\n
    TS-14<\/td>\nC\u00e2n b\u1eb1ng \u0111\u1ed9ng<\/td>\nTi\u00eau chu\u1ea9n ISO 1940-1 C\u1ea5p \u0111\u1ed9 G6.3<\/td>\n@ 1000 v\u00f2ng\/ph\u00fat<\/td>\n<\/tr>\n
    TS-15<\/td>\nTu\u1ed5i th\u1ecd \u1ed5 tr\u1ee5c (L10h)<\/td>\n> 25.000 gi\u1edd<\/td>\nD\u01b0\u1edbi t\u1ea3i 50%<\/td>\n<\/tr>\n
    TS-16<\/td>\nB\u00f4i tr\u01a1n<\/td>\nM\u1ee1 b\u00f4i tr\u01a1n \u0111\u1ea1t ti\u00eau chu\u1ea9n NSF H1 d\u00f9ng trong th\u1ef1c ph\u1ea9m.<\/td>\nMobil SHC ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/td>\n<\/tr>\n
    TS-17<\/td>\nH\u1ec7 th\u1ed1ng ni\u00eam phong<\/td>\nViton\u00ae ba l\u1edbp<\/td>\n\u0110\u1ea1t chu\u1ea9n IP67<\/td>\n<\/tr>\n
    TS-18<\/td>\n\u0110\u01b0\u1eddng k\u00ednh m\u1eb7t b\u00edch<\/td>\n180 mm<\/td>\nm\u1eb7t ti\u00eau chu\u1ea9n DIN<\/td>\n<\/tr>\n
    TS-19<\/td>\nM\u1eabu l\u1ed7 bu l\u00f4ng<\/td>\n8 x 14mm @ 155mm PCD<\/td>\nPh\u00f9 h\u1ee3p v\u1edbi c\u00e1c b\u1ed9 gi\u1ea3m \u00e1p ti\u00eau chu\u1ea9n.<\/td>\n<\/tr>\n
    TS-20<\/td>\n\u0110\u01b0\u1eddng k\u00ednh \u1ed1ng<\/td>\nTh\u00e0nh d\u00e0y 100 mm x 6 mm<\/td>\n\u1ed1ng ch\u00ednh x\u00e1c li\u1ec1n m\u1ea1ch<\/td>\n<\/tr>\n
    TS-21<\/td>\nCh\u1ee9ng nh\u1eadn h\u00e0n<\/td>\nTi\u00eau chu\u1ea9n EN ISO 9606-1<\/td>\nH\u00e0n TIG\/B\u1ea3o v\u1ec7 b\u1eb1ng kh\u00ed Argon<\/td>\n<\/tr>\n
    TS-22<\/td>\nKh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u1eb7n<\/td>\n> 1.000 gi\u1edd<\/td>\nASTM B117<\/td>\n<\/tr>\n
    TS-23<\/td>\nN\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp (Charpy)<\/td>\n> 40J @ -40\u00b0C<\/td>\nKi\u1ec3m tra \u0111\u1ed9 b\u1ec1n KV2<\/td>\n<\/tr>\n
    TS-24<\/td>\nS\u01a1n\/L\u1edbp ph\u1ee7<\/td>\n\u0110\u00e1nh b\u00f3ng \u0111i\u1ec7n h\u00f3a ho\u1eb7c Epoxy<\/td>\nL\u1edbp ph\u1ee7 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n FDA<\/td>\n<\/tr>\n
    TS-25<\/td>\nGi\u1edbi h\u1ea1n l\u1ef1c d\u1ecdc<\/td>\n4.500 N<\/td>\nD\u01b0\u1edbi t\u1ea3i tr\u1ecdng k\u00ednh vi\u1ec5n v\u1ecdng<\/td>\n<\/tr>\n
    TS-26<\/td>\n\u0110\u01b0\u1eddng k\u00ednh b\u1ed9 d\u1ee5ng c\u1ee5 ch\u1eef th\u1eadp<\/td>\n48 mm<\/td>\nD\u00f2ng s\u1ea3n ph\u1ea9m ch\u1ecbu t\u1ea3i n\u1eb7ng<\/td>\n<\/tr>\n
    TS-27<\/td>\nKho\u1ea3ng th\u1eddi gian b\u1ea3o tr\u00ec<\/td>\n2.000 gi\u1edd \/ 6 th\u00e1ng<\/td>\nC\u00f3 t\u00f9y ch\u1ecdn kh\u00f4ng c\u1ea7n b\u00f4i tr\u01a1n.<\/td>\n<\/tr>\n
    TS-28<\/td>\nCh\u1ee9ng ch\u1ec9<\/td>\nUKCA, CE, ATEX (T\u00f9y ch\u1ecdn)<\/td>\nTu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n kh\u00ed th\u1ea3i b\u1ee5i v\u00f9ng 21\/22<\/td>\n<\/tr>\n
    TS-29<\/td>\n\u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a \u1ed1ng<\/td>\n> 480 MPa<\/td>\n–<\/td>\n<\/tr>\n
    TS-30<\/td>\nC\u00e2n n\u1eb7ng<\/td>\n42,5 kg<\/td>\nX\u1ea5p x\u1ec9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n
    \n

    Th\u00edch \u1ee9ng theo khu v\u1ef1c: Ph\u1ee5c v\u1ee5 ng\u00e0nh th\u1ef1c ph\u1ea9m c\u1ee7a V\u01b0\u01a1ng qu\u1ed1c Anh v\u00e0 ch\u00e2u \u00c2u<\/h2>\n

    M\u1ed9t ti\u1ec7m b\u00e1nh \u1edf Leeds c\u00f3 nh\u1eefng y\u00eau c\u1ea7u kh\u00e1c nhau \u0111\u1ed1i v\u1edbi tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng so v\u1edbi m\u1ed9t nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn c\u00e1 \u1edf Aberdeen. C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 \u1ea9m, \u0111\u1ed9 m\u1eb7n v\u00e0 chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

    C\u00e1c trung t\u00e2m c\u00f4ng nghi\u1ec7p v\u00e0 nhu c\u1ea7u \u0111\u1eb7c th\u00f9 c\u1ee7a V\u01b0\u01a1ng qu\u1ed1c Anh<\/h3>\n