321 Nerjaveèi asye plat Bar, Longè: 6 m
Deskripsyon kout:
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METRIC STEEL STEEL PLAT BAR
Anjeneral nan 4.000 mèt longè ak souvan nan Klas T/304, T/316 & Klas T/430.
8 X 5MM STEEL STEEL PLAT BAR
12 X 3MM STEEL STEEL PLAT BAR
12 X 6MM STEEL STEEL PLAT BAR
12 X 10MM STEEL STEEL PLAT BAR
15 X 3MM STEEL STEEL PLAT BAR
15 X 5MM STEEL STEEL PLAT BAR
15 X 6MM STEEL STEEL PLAT BAR
15 X 10MM STEEL STEEL PLAT BAR
16 X 8MM EN STEEL PLAT BAR
20 X 3MM STEEL STEEL PLAT BAR
20 X 5 MM EN STEEL PLAT BAR
20 X 6MM STEEL STEEL PLAT BAR
20 X 8MM EN STEEL PLAT BAR
20 X 10MM STEEL STEEL PLAT BAR
20 X 12MM STEEL STEEL PLAT BAR
25 X 3MM STEEL STEEL PLAT BAR
25 X 4MM STEEL STEEL PLAT BAR
25 X 5MM STEEL STEEL PLAT BAR
25 X 6MM STEEL STEEL PLAT BAR
25 X 8MM STEEL STEEL PLAT BAR
25 X 10MM STEEL STEEL PLAT BAR
25 X 12MM STEEL STEEL PLAT BAR
25 X 16MM STEEL STEEL PLAT BAR
25 X 20MM STEEL STEEL PLAT BAR
30 X 3MM STEEL STEEL PLAT BAR
30 X 4MM EN STEEL PLAT BAR
30 X 5MM STEEL STEEL PLAT BAR
30 X 6MM EN STEEL PLAT BAR
30 X 8MM EN STEEL PLAT BAR
30 X 10MM STEEL STEEL PLAT BAR
30 X 12MM STEEL STEEL PLAT BAR
30 X 15MM STEEL STEEL PLAT BAR
30 X 20MM STEEL STEEL PLAT BAR
35 X 6MM EN STEEL PLAT BAR
38 X 3MM EN STEEL PLAT BAR
40 X 3MM STEEL STEEL PLAT BAR
40 X 5MM STEEL STEEL PLAT BAR
40 X 6MM EN STEEL PLAT BAR
40 X 8MM EN STEEL PLAT BAR
40 X 10MM STEEL STEEL PLAT BAR
40 X 12MM STEEL STEEL PLAT BAR
40 X 20MM STEEL STEEL PLAT BAR
40 X 25MM STEEL STEEL PLAT BAR
45 X 6MM STEEL STEEL PLAT BAR
50 X 3MM STEEL STEEL PLAT BAR
50 X 4MM EN STEEL PLAT BAR
50 X 5MM STEEL STEEL PLAT BAR
50 X 6MM EN STEEL PLAT BAR
50 X 8MM EN STEEL PLAT BAR
50 X 10MM STEEL STEEL PLAT BAR
50 X 12MM STEEL STEEL PLAT BAR
50 X 20MM STEEL STEEL PLAT BAR
50 X 25MM STEEL STEEL PLAT BAR
50 X 40MM STEEL STEEL PLAT BAR
60 X 3MM STEEL STEEL PLAT BAR
60 X 5MM STEEL STEEL PLAT BAR
60 X 6MM EN STEEL PLAT BAR
60 X 8MM EN STEEL PLAT BAR
60 X 10MM STEEL STEEL PLAT BAR
60 X 12MM STEEL STEEL PLAT BAR
60 X 15MM STEEL STEEL PLAT BAR
65 X 5MM STEEL STEEL PLAT BAR
65 X 6MM EN STEEL PLAT BAR
65 X 8MM STEEL STEEL PLAT BAR
65 X 10MM STEEL STEEL PLAT BAR
65 X 12MM STEEL STEEL PLAT BAR
65 X 15MM STEEL STEEL PLAT BAR
70 X 10MM STEEL STEEL PLAT BAR
75 X 3MM STEEL STEEL PLAT BAR
75 X 5MM STEEL STEEL PLAT BAR
75 X 6MM STEEL STEEL PLAT BAR
75 X 8MM EN STEEL PLAT BAR
75 X 10MM STEEL STEEL PLAT BAR
75 X 12MM STEEL STEEL PLAT BAR
75 X 15MM STEEL STEEL PLAT BAR
75 X 16MM STEEL STEEL PLAT BAR
75 X 20MM STEEL STEEL PLAT BAR
80 X 5MM STEEL STEEL PLAT BAR
80 X 6MM EN STEEL PLAT BAR
80 X 8MM EN STEEL PLAT BAR
80 X 10MM STEEL STEEL PLAT BAR
80 X 35MM STEEL STEEL PLAT BAR
100 X 3MM STEEL STEEL PLAT BAR
100 X 5MM STEEL STEEL PLAT BAR
100 X 6MM STEEL STEEL PLAT BAR
100 X 8MM STEEL STEEL PLAT BAR
100 X 10MM STEEL STEEL PLAT BAR
100 X 12MM STEEL STEEL PLAT BAR
100 X 15MM STEEL STEEL PLAT BAR
100 X 20MM STEEL STEEL PLAT BAR
100 X 25MM STEEL STEEL PLAT BAR
100 X 30MM STEEL STEEL PLAT BAR
120 X 12MM STEEL STEEL PLAT BAR
125 X 6MM STEEL STEEL PLAT BAR
150 X 6MM STEEL STEEL PLAT BAR
150 X 10MM STEEL STEEL PLAT BAR
200 X 10MM STEEL STEEL PLAT BAR
250 X 12MM STEEL STEEL PLAT BAR
300 X 12MM STEEL STEEL PLAT BAR
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IMPERIAL STEEL STEEL PLAT BAR
Anjeneral nan 4.000 mèt longè ak souvan nan Klas T/304, T/316 & Klas T/430.
3/8″ X 1/8″ STEEL STEEL PLAT BAR
1/2″ X 1/8″ STEEL STEEL PLAT BAR
1/2″ X 3/16″ STEEL STEEL PLAT BAR
1/2″ X 1/4″ STEEL STEEL PLAT BAR
5/8″ X 5/16″ STEEL STEEL PLAT BAR
3/4″ X 3/8″ STEEL STEEL PLAT BAR
1″ X 3/16″ STEEL STEEL PLAT BAR
1″ X 1/4″ STEEL STEEL PLAT BAR
1″ X 5/16″ STEEL STEEL PLAT BAR
1″ X 1/2″ STEEL STEEL PLAT BAR
1.1/4″ X 1/8″ STEEL STEEL PLAT BAR
1.1/4″ X 1/4″ STEEL STEEL PLAT BAR
1.1/4″ X 5/16″ STEEL STEEL PLAT BAR
1.1/4″ X 3/8″ STEEL STEEL PLAT BAR
1.1/4″ X 3/4″ STEEL STEEL PLAT BAR
1.1/4″ X 1″ STEEL STEEL PLAT BAR
1.1/2″ X 3/16″ STEEL STEEL PLAT BAR
1.1/2″ X 1/4″ STEEL STEEL PLAT BAR
1.1/2″ X 3/8″ STEEL STEEL PLAT BAR
1.1/2″ X 1/2″ STEEL STEEL PLAT BAR
1.1/2″ X 3/4″ STEEL STEEL PLAT BAR
1.1/2″ X 1″ STEEL STEEL PLAT BAR
1.3/4″ X 1.1/4″ STEEL STEEL PLAT BAR
2″ X 1/2″ STEEL STEEL PLAT BAR
2″ X 5/8″ STEEL STEEL PLAT BAR
2″ X 3/4″ STEEL STEEL PLAT BAR
2″ X 1.1/2″ STEEL STEEL PLAT BAR
2.1/2″ X 3/8″ STEEL STEEL PLAT BAR
2.1/2″ X 1″ STEEL STEEL PLAT BAR
2.1/2″ X 1.1/4″ STEEL STEEL PLAT BAR
3″ X 1/4″ STEEL STEEL PLAT BAR
3″ X 1/2″ STEEL STEEL PLAT BAR
3″ X 3/4″ STEEL STEEL PLAT BAR
3″ X 1″ STEEL STEEL PLAT BAR
4″ X 3/4″ STEEL STEEL PLAT BAR
4″ X 5/8″ STEEL STEEL PLAT BAR
4″ X 1″ STEEL STEEL PLAT BAR
Klas materyèl
Materyèl | Estanda ASTM A240 | 201, 304 304L 304H 309S 309H 310S 310H 316 316H 316L 316Ti 317 317L 321 321H 347 347H 409 410 410 4104S |
ASTM A480 estanda | 302, s30215, s30452, s30615, 308, 309, 309Cb, 310, 310Cb, S32615, S33228, S38100, 304H, 309H, 316H1, 316H1, 316Hb 347H, 348H, S31060, N08811, N08020, N08367, N08810, N08904,N08926, S31277, S20161, S30600, S30601, S31254, S31266,S32050, S32654, S32053, S31727, S332525, S334525, S334525, S334528 03, S32001, S32550, S31260, S32003, S32101, S32205, S32304, S32506, S32520, S32750, S32760, S32900, S32906, S32950, S32974 | |
JIS 4304-2005 Creole | SUS301L, SUS301J1, SUS302, SUS304, SUS304L, SUS316/316L, SUS309S, SUS310S, 3SUS21L, SUS347, SUS410L, SUS430, SUS630 | |
JIS G4305 Creole | SUS301, SUS301L, SUS301J1, SUS302B, SUS304, SUS304Cu, SUS304L, SUS304N1, SUS304N2, SUS304LN, SUS304J1, SUSJ2, SUS305, SUS305, SUS311S, SUS312S 15J2, SUS316, SUS316L, SUS316N, SUS316LN, SUS316Ti, SUS316J1, SUS316J1L, SUS317, SUS317L, SUS317LN, SUS317J1, SUS317J2, SUS836L, SUS890L, SUS321, SUS347, SUSXM7, SUSXM15J1, SUS329J1, SUS329J3L, SUS329J3L, SUS329, SUS3404, SUS3404 430, SUS430LX, SUS430J1L, SUS434, SUS436L, SUS436J1L, SUS444, SUS445J1, SUS445J2, SUS447J1, SUSXM27, SUS403, SUS410, SUS410S, SUS420J1, SUS420J2, SUS440A |
Spesifikasyon pwodwi
Fini | Epesè | Karakteristik | Aplikasyon |
nimewo 1 | 3.0mm ~ 50.0mm | Fini pa cho-woule, recuit ak marinated, karakterize pa sifas marinated blan | Ekipman endistri chimik, tank endistriyèl |
Nimewo 2B | 0.3mm ~ 6.0mm | Fini pa tretman chalè, marinated apre woule frèt, ki te swiv pa liy pase po yo dwe pi klere ak sifas lis. | Aplikasyon Jeneral Enstriman Medikal, Tablo |
No BA (Kleyan Rekwit) | 0.5mm ~ 2.0mm | Tretman chalè klere apre woule frèt | Utensil kwizin, ware kwizin, objektif achitekti |
Nimewo 4 | 0.4mm ~ 3.0mm | Polissage ak No 150 a No.180 abrazif may. Fini ki pi popilè yo | Enstalasyon tretman lèt ak manje, ekipman lopital, basen |
Nimewo 8 | 0.5mm ~ 2.0mm | Yon sifas meditativ ki sanble ak glas pa polisaj ak pi rafine abrazif plis pase 800 may | Reflektè, glas, enteryè-eksteryè dekorasyon pou bati |
HL (liy cheve) | 0.4mm ~ 3.0mm | Fini pa polisaj kontinyèl lineyè | Objektif achitekti, èskalator, machin ware kwizin |
Konpozisyon chimik
Klas | C | Si | Mn | P | S | Cr | Ni | Mo | Ti | N | Cu | Nb |
201 | ≤0.15 | ≤1.0 | 5.50-7.50 | ≤0.05 | ≤0.03 | 16.00-18.00 | 3.50-5.50 | - | - | 0.05-0.25 | - | - |
202 | ≤0.15 | ≤1.0 | 7.50-10.00 | ≤0.05 | ≤0.03 | 17.00-19.00 | 4.00-6.00 | - | - | 0.05-0.25 | - | - |
301 | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 16.00-18.00 | 6.00-8.00 | - | - | ≤0.1 | - | - |
302 | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 17.00-19.00 | 8.00-10.00 | - | - | ≤0.1 | - | - |
303 | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.2 | ≥0.15 | 17.00-19.00 | 8.00-10.00 | ≤0.6 | - | ≤0.1 | - | - |
304 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 17.00-19.00 | 8.00-10.00 | - | - | - | - | - |
304L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 18.00-20.00 | 8.00-10.00 | - | - | - | - | - |
304H | 0.04-0.1 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 18.00-20.00 | 8.00-10.00 | - | - | - | - | - |
304N | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 18.00-20.00 | 8.00-10.00 | - | - | 0.10-0.16 | - | - |
304J1 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 18.00-20.00 | 6.00-9.00 | - | - | - | 1.00-3.00 | - |
305 | ≤0.12 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 17.00-19.00 | 10.50-13.00 | - | - | - | - | - |
309S | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 22.00-24.00 | 12.00-15.00 | - | - | - | - | - |
310S | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 24.00-26.00 | 19.00-22.00 | - | - | - | - | - |
316 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | 10.00-14.00 | 2.00-3.00 | - | - | - | - |
316L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | 12.00-15.00 | 2.00-3.00 | - | - | - | - |
316H | ≤0.1 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | 10.00-14.00 | 2.00-3.00 | - | - | - | - |
316N | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | 10.00-14.00 | 2.00-3.00 | - | 0.10-0.16 | - | - |
316Ti | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 16.00-19.00 | 11.00-14.00 | 2.00-3.00 | ≥5C | - | - | - |
317L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 18.00-20.00 | 11.00-15.00 | 3.00-4.00 | - | - | - | - |
321 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 17.00-19.00 | 9.00-12.00 | - | 5C-0.7 | - | - | - |
347 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 17.00-19.00 | 9.00-12.00 | - | - | - | - | 10C-1.10 |
347H | ≤0.1 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 17.00-19.00 | 9.00-12.00 | - | - | - | - | 8C-1.10 |
2205 | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 21.00-24.00 | 4.50-6.50 | 2.50-3.50 | - | 0.08-0.20 | - | - |
2507 | ≤0.03 | ≤0.8 | ≤1.2 | ≤0.035 | ≤0.02 | 24.00-26.00 | 6.00-8.00 | 3.00-5.00 | - | 0.24-0.32 | - | - |
904L | ≤0.02 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 19.00-23.00 | 23.00-28.00 | 4.00-5.00 | - | - | 1.00-2.00 | - |
C276 | ≤0.02 | ≤0.05 | ≤1.0 | - | - | 14.00-16.50 | Lòt | - | - | - | - | - |
Monel400 | ≤0.3 | ≤0.5 | ≤2.0 | - | ≤0.024 | - | ≥63 | - | - | - | 28-34 | - |
409L | ≤0.03 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 17.00-19.00 | - | - | - | - | - | - |
410 | ≤0.15 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 11.50-13.50 | - | - | - | - | - | - |
410L | ≤0.03 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 11.50-13.50 | - | - | - | - | - | - |
420J1 | 0.16-0.25 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 12.00-14.00 | - | - | - | - | - | - |
420J2 | 0.26-0.40 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 12.00-14.00 | - | - | - | - | - | - |
430 | ≤0.12 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | - | - | - | - | - | - |
436L | ≤0.025 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 16.00-19.00 | - | - | - | - | - | - |
439 | ≤0.03 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | - | - | - | - | - | - |
440A | 0.60-0.75 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | - | ≤0.75 | - | - | - | - |
440B | 0.75-0.95 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | - | ≤0.75 | - | - | - | - |
440C | 0.95-1.2 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 16.00-18.00 | - | ≤0.75 | - | - | - | - |
441 | ≤0.03 | 0.2-0.8 | ≤0.7 | ≤0.03 | ≤0.015 | 17.50-18.50 | - | ≤0.5 | 0.1-0.5 | ≤0.025 | - | 0.3+3C-0.9 |
Nouvlope pwodwi yo asye pur ak papye anti-rouye ak bag asye pou anpeche domaj.
Etikèt idantifikasyon yo make selon spesifikasyon estanda oswa enstriksyon kliyan yo.
Anbalaj espesyal ki disponib selon kondisyon kliyan an.
Pake bobin asye pur
Fèy asye pur / pake plak asye pur
Pake bann asye pur
Pake chajman
Konpayi nou an baze nan Wuxi, vil rasanbleman endistriyèl asye pur nan Lachin.
Nou espesyalize nan bobin pur, fèy papye ak plak, tiyo asye pur ak ekipman, tib asye pur, epi tou pwodwi aliminyòm ak pwodwi kwiv.
Pwodwi nou yo te trè fè lwanj pa kliyan nou yo soti nan Ewòp, Amerik, Mwayen Oryan an, Afriken ak Azi Sidès. Nou pral ofri pwodwi konpetitif ak sèvis konplè a kliyan yo.
Nerjaveèi klas: 201, 202, 202cu, 204, 204cu, 303, 304, 304L, 308, 308L, 309, 309s, 310, 310s, 316, 316L, 4, 4, 1, 4, 3, 4 , 430F, 440, 440c,
Klas alyaj: Monel, Inconel, Hastolley, Duplex, Super Duplex, Titàn, Tantal, High Speed Steel, asye modere, aliminyòm, asye alyaj, asye kabòn, alyaj espesyal nikèl
Sou fòm: ba wonn, ba kare, ba Egzagonal, ba plat, ang, chanèl, pwofil, fil, baton fil, fèy, plak, tiyo san pwoblèm, tiyo ERW, bride, ekipman, elatriye.
Q1: Ki sa ki pur?
A: Nerjaveèi vle di pa gen okenn mak sou sifas asye a, oswa yon kalite asye ki pa domaje pa lè oswa dlo epi ki pa chanje koulè, san tach, rezistan a tach, rouye, efè a korozivite nan pwodwi chimik yo.
Q2: Èske Nerjaveèi vle di pa gen rouye?
A: Non, Nerjaveèi vle di pa fasil jwenn tache oswa wouye, li gen kapasite speical pou reziste tach, rouye ak korozyon.
Q3: Èske ou bay fèy asye pur?
A: Wi, nou bay diferan kalite fèy asye pur, ak epesè chenn nan 0.3-3.0mm. ak nan diferan fini.
Q4: Èske ou aksepte koupe nan sèvis longè?
A: Natirèlman, satisfaksyon kliyan an se pi gwo priyorite nou an.
Q5: Si mwen gen yon ti lòd, èske ou aksepte ti lòd?
A: Pa yon pwoblèm, enkyetid ou se enkyetid nou an, ti kantite yo aksepte.
Q6: Ki jan ou ka garanti bon jan kalite pwodwi ou a?
A: Premyèman, depi nan kòmansman an, nou te deja aplike yon lespri nan tèt yo, se sa ki bon jan kalite se lavi, travayè pwofesyonèl nou yo ak anplwaye yo pral swiv chak etap jiskaske machandiz yo chaje byen epi anbake soti.
Q7: Èske w ap pake pwodwi yo?
A: Moun pwofesyonèl fè anbalaj pwofesyonèl, nou gen diferan kalite anbalaj opsyonèl pou kliyan, ekonomik youn oswa pi bon.
Q8: Kisa ou bezwen konnen nan men kliyan anvan sitasyon egzat?
A: Pou yon sitasyon egzat, nou bezwen konnen klas, epesè, gwosè, fini sifas, koulè ak kantite nan lòd ou a, epi tou destinasyon an nan machandiz yo. Enfòmasyon sou pwodwi Customized yo pral bezwen plis, tankou desen, layout ak plan. Lè sa a, nou pral ofri sitasyon pi ba konpetitif ak enfòmasyon ki anwo yo.
Q9: Ki kalite tèm peman ou aksepte?
A: Nou aksepte T/T, West Union, L/C.
Q10: Si sa a se yon ti lòd, èske w ap livrezon machandiz yo bay ajan nou an?
A: Wi, nou fèt pou rezoud pwoblèm nan kliyan nou yo, nou pral jwenn machandiz yo san danje nan depo ajan ou a epi voye foto yo ba ou.
Q11: Èske ou jis fè fèy plat? Mwen vle fè yon fabrikasyon pou nouvo pwojè mwen an.
R: non, nou kesyon sa te poze pwodwi en fe plat dra sifas tretman, an menm tan, nou fabrike personnalisé metal fini pwodwi as per kliyan desen ak plan, teknisyen nou ap okipe tout rès la.
Q12: Konbyen peyi ou deja ekspòte?
A: Ekspòte nan plis pase 50 peyi sitou nan Amerik, Larisi, UK, Kowet, peyi Lejip, Iran,
Turkey, Jordan, elatriye.
Q13: Kouman mwen ka jwenn kèk echantiyon?
A: Ti echantiyon nan magazen epi yo ka bay echantiyon yo gratis. Catalgue ki disponib, pifò
modèl nou gen echantiyon pare nan stock. Echantiyon Customized pral pran apeprè 5-7 jou.
Q14: Ki sa ki livrezon an?
A: Tan livrezon echantiyon lòd la se 5-7 jou. Lòd veso yo apeprè 15-20 jou.
Q15: Ki aplikasyon an sou pwodwi ou yo?
A: 1.elevator pòt/kabin oswa ak bò-miray escalator a.
2.Wall CLADDING andedan oswa deyò sal reyinyon / restoran.
3.Facade lè CLADDING sou yon bagay, tankou kolòn nan gwoup la.
4.Plafon nan makèt la. 5.Dekoratif trase nan kèk kote amizman.
Q16: Konbyen tan ou ka garanti pou pwodwi/fini sa a?
A: garanti koulè pou plis pase 10 ane. Orijinal sètifika kalite materyèl kapab
dwe bay.