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U mona: Lehae » Litaba le Liketsahalo » Litaba tsa Lihlahisoa » Teko e phahameng ea khatello e phahameng ea khatello ea maikutlo 630 Bar bakeng sa Hydraulic Systems

Ho Kopanya Teko ea Khatello e Phahameng ea 630 Bar bakeng sa Hydraulic Systems

Maikutlo: 148     Mongoli: Lynn Liu Nako ea Phatlalatso: 2026-06-16 Tšimoloho: Sebaka

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ISO 15171 e lumellana. Tekanyo ea khatello e sa lutleng, sampole ea mokelikeli, le moea oa potoloho o fihlang ho 630 bar. Boholo ba khoele e ka lokisoang, lisebelisoa tsa tiiso, le litšepe tsa 'mele.

teko coupling .jpg

Hydraulic Test Coupling ke Eng?

A hydraulic test coupling (eo hape e bitsoang '  diagnostic coupling  or  test point )' ke 'compact fitting' e kentsoeng ka kotloloho holim'a potoloho ea haeteroliki. E fana ka boema-kepe bo tloaelehileng ba phihlello moo o ka hokelang tekanyo ea khatello, hose ea liteko, kapa tlhahlobo ea sampole ka metsotsoana - ha ho ho koala, ha ho khefu ea mohala, ha ho tahlehelo ea mokelikeli.

Setiiso sa ka hare sa mofuta oa poppet se lula se koetsoe ho fihlela ntlha ea hose ea teko ea ho nyalana e e bula. Moralo ona  o sa lutleng  o bolela ho qhalana ha lefela nakong ea khokahanyo le ho khaoha, leha likhatello li atamela moeli o lekantsoeng.

ISO 15171:  Likopano tsena tsa liteko li lumellana le  ISO 15171-1  (litekanyo le litlhoko tsa ts'ebetso bakeng sa lintlha tsa tlhahlobo tsa screw-in) le  ISO 15171-2  (li-fittings tsa ho qetela tsa hose ea teko ea ho nyalana). Tekanyetso ena ea machaba e tiisa hore ho na le phapanyetsano e fapaneng ho bahlahisi - hose e tšoanang ea teko e lumellana le likhokahano tsa Parker, Stauff, Hydac, Minimess, le ba bang.

Maemong a tloaelehileng a tšebeliso:

  • Ho etsa licheke  - netefatsa khatello ea sistimi nakong ea ho qala

  • Tlhokomelo ea kamehla  - Ho hlahloba kapele-pele ntle le ho sitisa tlhahiso

  • Mehlala ea metsi  - Ntša lisampole tsa oli bakeng sa tlhahlobo ea tšilafalo

  • Ho kenya moea ka har'a sistimi  - Lokolla moea o koaletsoeng ka mor'a tlhokomelo

  • Tharollo ea mathata  - Fumana likhatello tsa khatello ka nako ea nnete

Litlhaloso Tse Bohlokoa

Paramethara

Lintlha

Max. Khatello ea Mosebetsi

63 MPa / 630 bar

Phahamiso ea Khatello

4 × khatello ea ho sebetsa (e tloaelehileng)

Lisebelisoa tsa 'Mele

Tšepe e sehang mahala 1.0718, Stainless Steel 304, Stainless Steel 316L

Likhetho tsa tiiso

NBR (-20 ho +100 °C), FKM (-20 ho +200 °C), EPDM (-40 ho +150 °C), mocheso o tlase (-50 °C)

Kalafo ea Bokaholimo

Zinc-plated, Zinc Nickel CrVI-mahala

Tšebelisano le Mecha ea litaba

Oli ea Hydraulic, maro a thehiloeng ho oli ea diminerale (khase - e netefatsa ho lumellana)

Standard

ISO 15171-1 / ISO 15171-2

Khokahano ea Boema-kepe le Mokhoa oa Tiiso

Karolo ena e bua ka liqeto tse peli tsa bohlokoa ka ho fetisisa tsa boenjiniere: hore na ho kopanya ho hokahana joang le potoloho ea hau, le hore na ke eng e bolokang e tiisitsoe tlas'a khatello.

Likhetho tsa Size ea khoele

Li-screws tse hokelang ka kotloloho boema-kepeng bo kentsoeng holim'a hydraulic manifold ea hau, silinda, kapa block block. Bapisa khoele le boema-kepe bo teng - likhoele tse sa lumellaneng li baka ho lutla le ho senya likarolo ka bobeli.

Khoele

Mofuta

Boholo ba Lebitso

Tšebeliso e Tloaelehileng

M10x1

Metric fine

10 limilimithara

Li-valve tse nyenyane, li-cylinders tse nyenyane, li-circuits tsa lifofane

M12x1.5

Metric e mahoashe

12 limilimithara

Li-valve tse lekanang tsa boholo bo bohareng

M14x1.5

Metric fine

14 limilimithara

Li-valve tsa taolo ea tataiso

M16x2

Metric fine

16 limilimithara

Li-hydraulic tsa indasteri tse tloaelehileng - tse atileng haholo

M18x1.5

Metric fine

18 limilimithara

Li-cylinders tse kholo, lipompo tse kholo

G1/4

BSP e tšoanang

~ 13 limilimithara

Mekhoa e tloaelehileng ea Brithani, lisebelisoa tsa lefa

G3/8

BSP e tšoanang

~ 17 limilimithara

Boema-kepe ba maemo a mahareng a Brithani

G1/2

BSP e tšoanang

~ 21 limilimithara

Litsamaiso tse phahameng tsa Brithani-standard

M16x2  ke saese e le 'ngoe e laeloang khafetsa bakeng sa lits'ebetso tse akaretsang tsa indasteri.  G1/4  le  G1/2  li laola libaka tseo ho rokang BSP e leng tloaelo (UK, Commonwealth, limela tsa khale tsa Europe).

teko coupling..jpg
teko coupling ..jpg

Mokhoa oa ka hare oa Tiiso

Ts'ebetso e sa luleng e ipapisitse le valve ea poppet e entsoeng ka mochini ka nepo kahare ho 'mele o kopanyang:

  1. Ho phomola  - Popepe e tletseng selemo e tiisa khahlanong le setulo se ka hare. Khatello ea sistimi e ts'oara poppet e koetsoe ka thata.

  2. Ho hokela  - Qetello ea hose ea teko ea ho nyalana (ho ea ka ISO 15171-2) e tepeletsa poppet, e bula phaseje ho sekaja kapa sampole ea hau. Tiiso pakeng tsa hose end le coupling bore e thibela ho lutla ka ntle.

  3. Ho khaola  - Ha pheletso ea hose e hula, matla a selemo a koala poppet hang-hang. Oli e setseng boema-kepeng e lula kahare - marotholi a zero.

Motsoako oa seal (NBR, FKM, EPDM, kapa low-temp) o etsa mokoallo oa mantlha lipakeng tsa poppet le setulo, hammoho le mokoallo oa bobeli lipakeng tsa theipi ea hose end le bore e ka hare ea coupling. Ho khetha thepa ea tiiso e nepahetseng bakeng sa mocheso oa mokelikeli oa hau le k'hemistri e koahetsoe ka tataiso ea khetho  ka tlase.

teko coupling.jpg

Hobaneng o Khetha Likopano tsena tsa 630 Bar Test?

630 Bar - Moedi o Lekiloeng, Eseng oa Papatso

630 bar (9,135 psi) ke khatello e netefalitsoeng ea ho sebetsa ho latela liprothokholo tsa tlhahlobo tsa ISO 15171-1. Tokiso e 'ngoe le e' ngoe e etsa liteko tsa khatello ea cyclic le netefatso ea boima ba bopaki pele e lokolloa setokong.

Lisebelisoa tse 'nè tsa Litiiso, Lifensetere tse Nne tse sebetsang

Litsamaiso tse fapaneng tsa haeteroliki li tsamaisa maro a fapaneng ka mocheso o fapaneng. Motsoako o le mong oa tiiso ha o khone ho koahela maemo ohle:

  • NBR (khoutu N)  - Mekelikeli ea haeteroliki ea oli ea minerale e fihlang ho 100 °C. E bolokang litšenyehelo ho ~ 70% ea lits'ebetso tsa indasteri.

  • FKM (khoutu F)  - Mocheso o phahameng o fihla ho 200 °C. E boetse e sebetsana le maro a sa cheng a phosphate-ester. Ho hanyetsa lik'hemik'hale tse ntle khahlanong le li-additives tse mabifi.

  • EPDM (code E)  - Mouoane, mokelikeli oa brake (DOT 3/4), metsi-glycol, le li-polar synthetic fluids. Mocheso oa mocheso o theohela ho -40 ° C. Ha e tsamaisane le oli ea peterole.

  • Low-Temp (khoutu L)  - Motsoako oa Cryogenic-grade o lekantsoe ho -50 °C. E sebelisoa lisebelisoa tsa mehala tsa arctic, li-hydraulic system tse bolokang serame, le li-circuits tse thusang tsa LNG. E fumaneha ka kopo.

Ho khetha tiiso e fosahetseng ke sesosa sa # 1 sa ho hloleha kapele. Ho boloka $0.30 ha ho khethoa litiiso ho ka bitsa likete ka nako e sa reroang.

Khanyetso ea Corrosion e Tšoanang le Tikoloho

  • Zinc-plated (code Z)  - E lekane bakeng sa libaka tse futhumetseng tsa ka tlung tse nang le mongobo o laoloang. Ha e khothalletsoe ho pepeseha kantle.

  • Zinc Nickel CrVI-mahala (khoutu N)  - lihora tse 500+ ho hanyetsa letsoai-spray ka ASTM B117. E lumellana ka botlalo le REACH. Khetho ea kamehla bakeng sa thomello ea Europe le lits'ebetso tsa kantle.

  • Stainless Steel 304 (khoutu F)  - Ho hanyetsa ha kutu ka kakaretso. E loketse bakeng sa ho lokisa lijo libakeng tse haufi le libaka tse senyang hanyenyane.

  • Stainless Steel 316L (khoutu L)  - e ntlafalitsoeng ke Molybdenum. Molemo ka ho fetisisa bakeng sa tikoloho ea leoatle, libaka tse lebōpong la leoatle, libaka tsa ho hlatsoa lik'hemik'hale, le kae kapa kae moo li-chloride kapa letsoai li leng teng.

Likatiba tsa Tšireletso tse Lulang le Yuniti

Mofuta oa Cap

Khoutu

Molemo ka ho fetisisa Bakeng sa

Round Cap with Chain

R

Tšebeliso e akaretsang - ketane e thibela tahlehelo

Hexagonal Cap with Chain

H

Li-wrench-tightenable, libaka tse thothomelang haholo

Universal Cap (vent + sireletsa)

E

Ho kenya moea le tšireletso li kopane

Plastiki Cap

P

Ha e na litšenyehelo, kamore e hloekileng kapa ea ka tlung feela

Khetho ea Anti-Vibration O-Ring

Lisebelisoa tse tsamaeang ka ho sisinyeha ho sa khaotseng (lipompo tsa piston> 5 Hz, li-compressor tsa diesel, li-excavator tse lateloang) butle-butle li ka lokolla lisebelisoa tse kentsoeng ka lihora tse makholo tsa ts'ebetso. Ho kenyelletsa anti-vibration O-ring (code  1) ho theha senotlolo sa bobeli sa mochini. Keketseho ea litšenyehelo e nyane - phaello ea ts'epo ea tšimo e bohlokoa.

Karolo ea Nomoro Configuration

Khokahano e 'ngoe le e' ngoe ea liteko e hahiloe ho khoutu ea likarolo tse tšeletseng:

Surface - Seal - Cap - Series - O-ring - Ho Tšoaea

Z - N - R - TC - 0 - 0
│ │ │ │ │ └─ 0 = Ha ho letho / XX = Letšoao la tloaelo la khoebo
│ │ │ │ └─ ─ = Standard = ─ ─ Anti-vibration O-ring
│ │ │ └────────── TC = Letoto la ho kopanya liteko
│ │ └───────────────── W = Ha ho / H = Hex / R = Round / E = Universal / P = Plastiki
│ └────────────────────── N = NBR / F = FKM / E = EPDM / L = Tlaase-EPDM F
└──────────────────────────── Z = Zinc / N = Zn = Zn / SS = Mmala o Motšo / N = Zn = Zn L = 316LSS

Mehlala ea Tlhophiso

Nomoro ea Karolo

Tšenyeho

ZNR-TC-0-0

'Mele oa zinki, tiiso ea NBR, ketane e pota-potileng, selikalikoe sa O-ring, ha ho na letšoao la tloaelo

LFH-TC-1-XX

'Mele oa 316L, tiiso ea FKM, Hex chain cap, anti-vibration O-ring, logo ea tloaelo

NEE-TC-0-0

'Mele o se nang Zn-Ni CrVI, tiiso ea EPDM, Universal cap, O-ring e tloaelehileng

Mokhoa oa ho khetha Test Coupling ea hau

  1. Hlalosa khoele ea boema-kepe  karolong ea hau ea haeteroliki. Sheba setšoantšo kapa methara ka sekala sa khoele. Tse tloaelehileng haholo:  M16x2 M10x1 G1/4 , kapa  G1/2.

  2. Netefatsa khatello ea sistimi ea hau ea tlhoro . Haeba e feta 630 bar, nyolohela ho sehlopha sa maemo a holimo se loketseng.

  3. Bapisa tiiso le mokelikeli oa hau le mocheso . Oli ea liminerale ka tlase ho 80 °C → NBR. Ka holimo ho 100 °C kapa mokelikeli o sa cheng → FKM. Mokelikeli oa brake, mouoane, kapa metsoako ea polar → EPDM. Ka tlase ho -40 °C → kopa mocheso o tlase.

  4. Khetha tšepe ea 'mele e thehiloeng tikolohong . Omella ka tlung → tšepe e entsoeng ka zinki. Ka ntle/sekepe/se hlatswang → 316L SS. Thekiso ea thepa ea Europe → Zn-Ni CrVI-mahala joalo ka motheo.

  5. Eketsa likhetho tse sebetsang . Kepisi e hoketsoeng ketane bakeng sa tšebeletso ea tšimo. Anti-vibration O-ring bakeng sa mochini o bilikang kapa o fetolang. Sekoahelo sa Universal haeba bokhoni ba ho kenya moea bo hlokahala.

  6. Hlalosa bongata le tlhoko ea nako ea ho etella pele . Litlhophiso tse tloaelehileng li tsamaea kapele ho feta lihlopha tse tšoailoeng.

Haeba o sa tiisehe ka paramethara efe kapa efe, re romelle senepe sa boema-kepe bo teng le molaetsa mabapi le maemo a ts'ebetso ea hau - re tla khothaletsa tlhophiso e nepahetseng.

Tataiso ea ho Kena

  1. Lokisa boema-kepe.  Hloekisa lesoba le khoele ka solvent. Tlosa lithōle, sekontiri sa khale sa khoele, le li-burrs. Boema-kepe bo litšila bo baka tšenyo ea ho kenya le ho lutla ka mor'a ho kenya.

  2. Sebelisa sealant ea khoele ka nepo.  Sebelisa theipi ea PTFE (liphutheloana tse 2-3, litaba tsa tataiso) kapa sekontiri sa metsi sa anaerobic se kentsoeng 630 bar. U se ke ua sebelisa ho feta - sealant e feteletseng e ka kena potolohong ea hydraulic 'me ea silafatsa oli.

  3. Torque ho ea ka litlhaloso.  Tiisa ka letsoho pele, ebe u sebelisa torque u sebelisa litekanyetso tse ka tlase. Le ka mohla u se ke ua sebelisa li-wrenches ho li-couplings tsa liteko - li senya setulo sa ka hare sa poppet.

Khoele

E khothalelitsoeng Torque

Sesebelisoa

M10x1

15–20 N·m

8 mm wrench

M16x2

55–75 N·m

14 mm wrench

G1/4

15–25 Nm

13/16' seqha

G1/2

60–85 N·m

1¼' seqha

  1. Hokela kepisi ea tšireletso.  Boloka cap e buletsoe neng kapa neng ha ntlha ea teko e sa sebelisoe. Lerōle le seretse ka har'a poppet e ka hare li baka lintlha le ho lutla.

  2. Teko ea khatello ea maikutlo pele e etsoa.  Tlisa tsamaiso khatellong ea ho sebetsa 'me u hlahlobe motsoako o kopanyang oa' mele-to-port bakeng sa ho lla. Lokisa hona joale ho feta nakong ea tlhahiso.

Lisebelisoa tse Tloaelehileng

Kopo

Karolo ea ho Kopanya Teko

Litsi tsa matla a hydraulic

Ho etsa liteko tsa khatello, netefatso ea tlhahiso ea pompo e tloaelehileng

Mechini ea mehala

Tlhahlobo ea mochini bakeng sa baepolli ba lintho tsa khale, li-cranes, lisebelisoa tsa temo

Mechine ea khatiso ea indasteri

Netefatso ea nako ea sebele ea khatello ntle le ho emisa potoloho

Libenche tsa liteko

Lipotoloho tse pheta-phetoang tsa ho hokahanya / ho hakolla nakong ea R&D le QA

Taolo ea sekontiri sa turbine ea moea

Ho etsa lisampole nako le nako le khatello ea ho rekota lits'ebetsong tse hole

Litsamaiso tse khethehileng tsa mokelikeli

Mela e thibelang mollo, li-circuits tsa braking water-glycol

Lipotso Tse Botsoang Khafetsa

A na 630 bar test coupling coupling tšebeletso ea khase?

Moralo o tloaelehileng oa ISO 15171 o ntlafalitsoe bakeng sa oli ea hydraulic le maro a thehiloeng ho liminerale. Bakeng sa moea o hatelitsoeng kapa mecha e meng ea khase, geometry ea ho tiisa ka hare e kanna ea se fane ka ts'ebetso e lekaneng ea ho lutla ka lebaka la viscosity e tlase ea likhase. Haeba kopo ea hau e kenyelletsa ts'ebeletso ea khase, hlakisa sena ka nako ea odara e le hore re ka lekola metsoako e meng ea li-seal le ho netefatsa hore na 'mele oa hau o sebetsa joang bakeng sa khatello e khethehileng ea ts'ebetso.

Phapang ke efe pakeng tsa 304 le 316L tšepe e sa hloekang bakeng sa ho kopanya liteko?

Phapang ea bohlokoa ke litaba tsa molybdenum. 304 SS e na le hoo e ka bang 18% chromium le 8% nickel, e fanang ka khanyetso e ntle e akaretsang ea kutu libakeng tse omeletseng tsa ka tlung ka theko e tlase. 316L SS e eketsa 2-3% ea molybdenum, e ntlafatsang haholo ho hanyetsa likoti tse bakoang ke chloride le crevice corrosion. Bakeng sa tikoloho ea maoatle, lits'ebetso tse lebopong la leoatle, libaka tsa ho hlatsuoa ha lik'hemik'hale, kapa ts'ebeliso efe kapa efe e pepesitsoeng ka letsoai kapa letsoai la de-icing, 316L ke khetho e khothaletsoang ho sa tsotellehe litšenyehelo tse phahameng tsa thepa.

A na nka fumana mongolo oa logo ea tloaelo likopanong tsa ka tsa liteko?

Ee. Sebelisa khoutu ea ho tšoaea XX khoeleng ea nomoro ea karolo 'me u romelle faele ea hau ea logo ea vector (AI/EPS/PDF e ratoa). Letšoao le ngotsoe ka laser yuniti ka 'ngoe pele e romelloa. Bonyane boholo ba batch bakeng sa ho tšoaea tloaelo bo fapana ho ea ka kakaretso ea molumo oa odara - hangata e fumaneha ho qala ka li-unit tse 50 SKU ka 'ngoe.

Na ke hloka anti-vibration O-ring ho khokahanyo e 'ngoe le e 'ngoe ea liteko?

Eseng kamehla. Anti-vibration O-ring (khoutu 1 ka nomoro ea karolo) e eketsa tšobotsi ea bobeli ea ho boloka pakeng tsa 'mele o loketseng le ho kenya khoele. E khothaletsoa ka matla bakeng sa lisebelisoa tse nang le ho thothomela ho tsoelang pele ka holimo ho 5 Hz - joalo ka lipompo tsa piston, li-compressor tsa diesel, li-excavator tse tsamaeang, kapa li-conveyor system tse sisinyehang. Bakeng sa lits'ebetso tse sa fetoheng joalo ka liteishene tsa liteko tsa laboratori kapa mechini ea khatiso e emeng, mofuta o tloaelehileng ntle le O-ring hangata o lekane.

Ke mefuta efe ea likhoele e fumanehang bakeng sa likhokahano tsa liteko tsa bar tse 630?

Ho fumaneha ha maemo ho akaretsa likhoele tsa metric M10x1, M12x1.5, M14x1.5, M16x2, M18x1.5, le BSP parallel threads G1/4, G3/8, G1/2. Mefuta e tloaelehileng ka ho fetisisa ke M10x1 (li-circuits tsa compact), M16x2 (li-hydraulics tse tloaelehileng tsa indasteri), le G1/2 (litsamaiso tse phahameng tsa phallo). Likhoele tse tloaheletsoeng ka ntle ho mekhahlelo ena li ka etsoa ho latela palo e tlase ea odara.

Ke khetha joang setiiso se nepahetseng bakeng sa sistimi eaka ea haeteroliki?

Qala ka mofuta oa mokelikeli oa hau oa sebele le mocheso o phahameng oa ho sebetsa. NBR e sebetsa bakeng sa maro a hydraulic a thehiloeng ho oli ea liminerale ho fihla ho 100 ° C - sena se akaretsa hoo e ka bang 70% ea lits'ebetso tsa indasteri mme ke khetho e theko e tlase haholo. Fetolela ho FKM haeba sistimi ea hau e sebetsa ka holimo ho 100 °C kapa e sebelisa maro a phosphate ester (tse sa cheng). Khetha EPDM haeba u sebetsa ka brake fluid, mouoane, metsi-glycol metsoako, kapa polar synthetics. Bakeng sa tikoloho ea arctic kapa cryogenic ka tlase ho -40 °C, kopa motsoako oa mocheso o tlase. Ho tsamaisa tiiso e fosahetseng tsamaisong ea mocheso o phahameng ke sesosa se ka sehloohong sa ho lutla pele ho nako.

Na plating ea mahala ea Zinc Nickel CrVI ea hlokahala bakeng sa mebaraka ea Europe?

Ha e hlokehe ka thata ke molao bakeng sa lihlahisoa tsohle, empa e khothalelitsoe haholo. EU REACH Regulation (EC) No 1907/2006 e thibelang chromium e hexavalent ka holimo. Hangata li-zinc plating li na le likarolo tsa trace Cr(VI) passivation. Ho roala ha Zinc Nickel CrVI-free plating ho felisa kotsi ena ea ho lumellana ka botlalo ha ho ntse ho fana ka lihora tse 500+ tsa ho hanyetsa letsoai-spray ka ASTM B117 - ho molemo haholo ho feta zinki e tloaelehileng. Bakeng sa sehlahisoa sefe kapa sefe se romelloang ho EU, CrVI-free ke khothaletso ea kamehla.

ISO 15171 ke eng, 'me ke hobane'ng ha e le taba ea ho kopanya liteko?

ISO 15171 ke tekanyetso ea machaba e koahelang ka ho khetheha likhokahano tsa liteko tsa hydraulic tse sebelisoang lits'ebetsong tsa matla a mokelikeli. Karolo ea 1 (ISO 15171-1) e hlalosa boholo, litlhoko tsa ts'ebetso, le mekhoa ea liteko bakeng sa likhokahano tsa liteko tsa screw-in. Karolo ea 2 (ISO 15171-2) e akaretsa lisebelisoa tsa ho qetela tsa hose ea teko ea ho nyalana. Tumellano e bolela hore sehlahisoa se kopana le maemo a tsebahalang lefatšeng ka bophara a ho fapanyetsana le maemo a khatello - ho bohlokoa ha lisebelisoa tsa hau tsa tlhahlobo li hloka ho hokahana le likarolo tse tsoang ho bahlahisi ba fapaneng. Lihlahisoa tse kopanang le ISO 15171 ka linako tse ling indastering li bitsoa 'diagnostic coupling' kapa 'minimess' style fittings.

Fumana Quote - Ruihua Hardware

U hloka litheko, khothaletso ea boholo, kapa khakanyo ea delibari? Ikopanye le uena - re tla khutlela ho uena kapele.

Hot Keywords: Lisebelisoa tsa Hydraulic Li-Hydraulic Hose Fittings, Hose le Fittings,   Hydraulic Quick Couplings , China, moetsi, mofani oa thepa, fektheri, k'hamphani
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 Eketsa: 42 Xunqiao, Lucheng, Industrial Zone, Yuyao, Zhejiang, China

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Boleng ba sehlahisoa ke bophelo ba RUIHUA. Ha re fane ka lihlahisoa feela, empa hape le tšebeletso ea rona ka mor'a thekiso.

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