Surging yog unstable extruder tso zis. Cov txiaj ntsig pom tau tuaj yeem hloov cov yeeb nkab phab ntsa thickness, zaj duab xis ntsuas, qhov ntev profile, strand txoj kab uas hla lossis tuag siab. Txoj cai kho yog nyob ntawm qhov kev hloov pauv pib - tsis yog qhov kev hloov kho yooj yim tshaj plaws mus txog.
Teb ceev
Ib qho ntsia hlau extruder surges thaum cov khoom ntws los ntawm txoj kab nres tsis tu ncua. Cov peev txheej feem ntau suav nrog kev pub mis tsis sib xws, kev hloov pauv ceev ceev, qhov ntsuas kub tsis ruaj khov, tsis tiav lossis tsis ruaj khov, qhov hloov pauv lossis kev txwv tsis pub tuag, ntsia hlau-thiab-ntim hnav, thiab kev hloov pauv ceev hauv qab.
Cov ntaub ntawv yaj lub siab, lub cev muaj zog tam sim no, ntsia hlau ceev, cheeb tsam kub, pub tus nqi thiab downstream ceev ntawm tib lub sijhawm ua ntej hloov chaw. Yog tias lub siab thiab cov zis txav mus ua ke, tshawb xyuas cov extruder thiab ntws txoj kev. Yog hais tias tus extruder tiam sis nyob ruaj khov thaum cov khoom hloov, pib nrog cov tuag, txias, nqus tsev vacuum, tshem tawm los yog winder.
Qhov "surging" txhais li cas hauv ib qho ntsia hlau extrusion?
Surging yog ib qho kev hloov pauv tsis tu ncua ntawm cov yaj uas xa los ntawm extruder. Ib qho kev sib hloov siab yuav ncethiab lub caij nplooj zeeg, lub cev muaj zog load yuav voj voog, lossis cov khoom loj tuaj yeem hloov pauv ntawm tuab thiab nyias. Lub voj voog tuaj yeem ceev ceev, qeeb lossis tsis sib npaug, thiab lub sijhawm ntawd yog ib qho tseem ceeb tshaj plaws rau kev kuaj mob.
CovLub koom haum ntawm Plastics Engineers 'cov ntaub ntawv qhia txog kev nce siabpab pawg ntau cov xwm txheej ib leeg rau hauv peb lub tswv yim: kev pub noj tsis sib haum, channel ntsaws rau hauv thaj chaw melting, thiab tsis txaus sau rau hauv seem twj. Dynisco kuj tseem piav qhia tias kev noj zaub mov tsis ruaj khov, melting lossis pressurization tuaj yeem cuam tshuam cov zis, thiab qhov kev hloov pauv ntawm qhov tuag-siab feem ntau cuam tshuam nrog cov zis hloov pauv.
Qhov ntawd tsis tau txhais hais tias txhua qhov kev hloov pauv pom pom yog qhov extruder surge. Ib qho kev poob qis, lub tshuab nqus tsev vacuum, qhov tsis sib xws ntawm qhov cua txias lossis qhov hloov pauv tuaj yeem hloov pauv cov khoom thaum cov dej ntws tsis tu ncua. Ntsuam xyuas lub teeb liab saw ua ntej kov cov ntsia hlau.
Kev nyab xeeb ua ntej kev soj ntsuam
Molten polymer, khaws cia siab, cua sov thiab cov khoom siv tig tuaj yeem ua rau raug mob hnyav. Ua raws li lub tshuab tsim cov txheej txheem kaw thiab koj cov nroj tsuag lub zog-tswj kev pab cuam ua ntej tshem cov neeg tiv thaiv, qhib qhov tuag, ntxuav, unjamming lossis ntsuas cov khoom. OSHA'slockout/tagout overviewpiav qhia txog qhov yuav tsum tau ua kom tswj tau lub zog txaus ntshai thaum ua haujlwm; cov kev cai hauv zos thiab cov txheej txheem ntawm qhov chaw yuav ntxiv cov kev cai ntxiv.
Ua ntej txiav txim siab seb qhov tsis ruaj khov pib ua ntej lossis tom qab tuag
Saib kab ua ib qho kev sib txuas. Ib tug zoo thawj dataset muaj tsawg kawg yog yaj siab nyob ze ntawm lub tuag, tiag tiag ntsia hlau ceev, tsav tam sim no los yog torque, tiag tiag chim-zones kub, feeder tso zis qhov twg muaj, thiab qhov ceev ntawm lub haul-off, winder los yog cutter. Siv cov txiaj ntsig tiag tiag, tsis yog teeb tsa ib leeg.
Siab thiab cov khoom sib txawv ua ke
Lub hauv paus muaj feem ntau nyob rau hauv kev pub mis, khoom thauj, melting, metering, lub npov pob, adapter lossis tuag. Sib piv lub voj voog nrog lub cev muaj zog, tswj qhov kub thiab txias thiab cov txheej xwm pub khoom noj.
Cov khoom sib txawv tab sis yaj siab tsis tu ncua
Tshawb xyuas cov txheej txheem qis qis ua ntej: tuag daim di ncauj, txias, nqus tsev, tshem tawm traction, kab ceev, winding nro lossis txiav tswj.
Lub cev muaj zog load hloov ua ntej siab
Kev pub noj los yog cov khoom sib txawv ntawm cov khoom sib txawv yog qhov xav tias muaj zog dua. Qhov kev ncua deb ntawm lub cev ntawm ntu pub thiab lub siab sensor tuaj yeem tsim lub sijhawm ncua.
Lub voj voog siab tab sis lwm cov cim tsis ua
Tshawb xyuas lub siab sensor, xaim, mounting thiab teeb liab txias ua ntej kho cov zaub raws li cov txheej txheem txheej txheem.
Technical hauv paus: lubDynisco extrusion-stability ntawvtxuas kev tuag-nkag siab tsis ruaj tsis khov nrog cov zis variation thiab pom zoo saib xyuas tas li txhawm rau txheeb xyuas qhov chaw.
Extruder surging qauv thiab dab tsi los xyuas
| Pom qauv | Zoo li cheeb tsam | Yuav ua li cas kom paub tseeb | Thawj tswj kev nqis tes ua |
|---|---|---|---|
| Lub siab tsis tu ncua thiab lub cev muaj zog-load hloov | Pub cov khoom sib xws los yog cov khoom siv conveying | Hopper bridging, pellet los yog regrind variation, feeder refill txheej xwm, pub-caj pas txias, bulk-density hloov | Stabilize ib qho khoom siv ntau thiab pub khoom noj; tshuaj xyuas lub hopper thiab pub caj pas |
| Surging yuav phem dua li cov ntsia hlau ceev nce | Melting txwv, channel txwv los yog tsis tsim nyog ntsia hlau tsim rau lub luag hauj lwm | Unmelt, hloov-zone kub tus cwj pwm, tsav load, resin thiab throughput piv rau cov ntsia hlau daim ntawv thov | Rov qab mus rau qhov kawg ruaj khov ceev thiab sib piv cov qauv ua ntej hloov qhov kub thiab txias profile |
| Lub voj voog tsis tu ncua sib piv lub tshuab cua sov lossis lub voj voog txias | Kev tswj qhov kub thiab txias | Qhov tseeb qhov kub thiab txias, lub rooj zaum thermocouple, tso zis tso cua sov, cua txias-valve lossis kiv cua ua haujlwm | Kho qhov teeb meem tswj; tsis txhob npog nws nrog rov teeb tsa cov kev hloov pauv |
| Siab nce maj mam, ces hloov sharply | Lub npov pob, lim, adapter lossis kev txwv tuag | Siab ua ntej thiab tom qab qhov kev txwv qhov twg instrumentation tshwm sim; kev kis kab mob thiab tshuaj ntsuam keeb kwm | Siv cov kev pom zoo kaw thiab kev tshuaj ntsuam-hloov txheej txheem; tshuaj xyuas txoj kev ntws |
| Lub voj voog ruaj khov nrog kev hloov me ntsis hauv cov tsav tam sim no | Metering-section sau lossis downstream tswj | Lub sijhawm ua haujlwm siab, tus nqi feeder, tuag thov, tshem tawm thiab lub zog-tswj tswj yog haum | Correlate lub voj voog nrog txhua qhov kev sib hloov lossis kev caij tsheb kauj vab ntawm kab |
| Kev tsis ruaj tsis khov tshwm sim tom qab kev pabcuam ntev thiab tsis tuaj yeem rov qab los nrog kev txheeb xyuas qhov tseeb | Screw-and-barrel clearance, ya davhlau hnav los yog nto puas | Tso zis ntawm tib daim ntawv qhia thiab ceev, yaj kub, tsav load, ntsuas diameters, davhlau mob thiab chim bore | Ntsuas cov khoom thiab sib piv nrog cov qauv kos duab lossis kev pom zoo hnav txwv |
Lub rooj yog ib qho cuab yeej triage, tsis yog ib daim ntawv qhia universal. Resin rheology, ntsia hlau geometry, pub daim ntawv, tuag tsis kam thiab ntsuas qhov chaw tag nrho cuam tshuam rau lub teeb liab. Ua ib qho kev hloov pauv ntawm ib lub sijhawm thiab khaws cov ntaub ntawv hauv paus.
Xa Nanhaiya lub siab sib txawv, ntsia hlau ceev, lub cev muaj zog load, khoom, khoom, tso zis thiab tam sim no ntsia hlau daim duab. Pab neeg tuaj yeem pab txiav txim seb cov kauj ruam tom ntej yog kev kho, tshuaj xyuas lossis hloov pauvib leeg ntsia hlau thiab chim.
Xa koj cov ntaub ntawv ExtrusionIb theem kev kuaj mob xya-kauj ruam
Cia lub hauv paus ua ntej yuav hloov
Sau cov qib resin thiab ntau, virgin-to-regrind ratio, additive los yog masterbatch tus nqi, tshuab ziab khaub ncaws qhov twg muaj feem xyuam, feeder teeb, ntsia hlau ceev, cheeb tsam setpoints thiab qhov tseeb, pressures, motor load, output and line speeds. Kuj tseem sau thaum qhov teeb meem pib: tom qab cov khoom hloov pauv, hloov pauv ntawm lub vijtsam, kev saib xyuas, kev nce nrawm lossis rov pib dua.
Sib cais cov dej ntws ntws sib txawv ntawm cov dej ntws tawm qhov sib txawv
Kev sib hloov siab thiab cov khoom loj tib lub sijhawm. Ruaj khov extruder siab nrog cov kav dej tsis ruaj tsis khov lossis cov yeeb yaj kiab ntsuas cov ntsiab lus mus rau kev siv cuab yeej, cua txias, lub tshuab nqus tsev lossis tshem tawm tswj. Yog tias ob qho tib si hloov pauv ntawm tib lub suab, txuas ntxiv mus.
Tshawb xyuas txoj kev pub khoom noj thiab cov khoom sib xws
Saib rau kev sib txuas, nas-hloov, tsis sib haum xeeb feeder refill, sib xyaw pellet qhov ntau thiab tsawg, nplua nplua ntau, sib txawv regrind bulk ntom, condensation los yog tsis ruaj khov noj-khob caj pas. Ib tus ntsia hlau ib leeg yog qhov nkag siab rau tus nqi thiab kev sib txhuam ntawm cov khoom siv nkag mus rau txhua qhov tig ntawm cov ntsia hlau.
Khiav kev tswj kev sib piv tsuas yog nrog cov khoom pom zoo rau cov khoom. Yog tias qhov kev hloov pauv hloov nrog cov khoom noj khoom haus thaum lub tshuab teeb tsa tseem ruaj khov, sau cov khoom sib txawv es tsis txhob them nyiaj nrog ntau lub tshuab tsis cuam tshuam.
Txheeb xyuas qhov ceev ceev thiab tsav tus cwj pwm
Sib piv cov lus txib ceev nrog qhov ceev ceev. Xyuas seb tsav tam sim no lossis lub zog oscillates nrog lub voj voog siab. SPE surging daim ntawv piav qhia hais tias kev pub noj tsis sib xws thiab qhov sib xyaw ua ke tuaj yeem cuam tshuam rau lub zog tsav, txawm hais tias lub sijhawm thiab qhov ntse ntawm cov kev hloov pauv yuav txawv.
Yog hais tias ceev cov lus teb nws tus kheej txav, tshawb xyuas lub tsav, encoder, mechanical kis tau tus mob thiab ib qho kev tswj lub voj ua ntej redesigning lub hau.
Txheeb xyuas qhov tseeb thermal tswj, tsis yog daim ntawv qhia xwb
Lub teeb pom kev zoo tsis paub meej tias cov hlau ruaj khov lossis yaj kub. Sib piv txhua cheeb tsam tus nqi tiag tiag thiab cov khoom siv hluav taws xob. Tshawb xyuas cov thermocouple tiv tauj, lub tshuab rhaub cua sov, cov kiv cua txias lossis cov li qub, thiab txhua qhov chaw uas pheej rov ua dua lossis qis dua.
Tsis txhob hloov txhua cheeb tsam ua ke. Qhov ntawd rhuav tshem cov pov thawj uas xav tau los txheeb xyuas seb lub voj voog yog tshwm sim los ntawm kev tswj cov khoom siv, lub sijhawm ntxov melting nyob ze ntawm cov khoom noj los yog tsis txaus melting downstream.
Tshawb xyuas cov kev txwv hloov pauv thiab cov khoom siv degraded
Lub thawv ntim khoom ntim khoom, cov pa paug paug paug, txwv tsis pub hloov pauv lossis puas tuag tuaj yeem hloov qhov kev thov siab tso rau ntawm ntu ntsuas. Sib piv cov keeb kwm siab nrog lub sijhawm hloov pauv ntawm lub vijtsam thiab cov khoom sib kis. Qhov kev tshuaj ntsuam kom raug thiab kev txwv hloov pauv yog daim ntawv thov tshwj xeeb.
Tsaus specks lossis kab dub ntxiv lwm qhov qhia. Nanhaiya uadub-kab teeb meem kab luspom zoo kom kuaj xyuas cov khoom siv raw, tu, ntsia hlau thiab lub thoob qhov xwm txheej, qhov tuag thiab lim es tsis xav tias yog vim li cas.
Ntsuas cov ntsia hlau thiab lub thoob thaum cov txheej txheem kuaj xyuas tsis piav qhia qhov poob
Hnav tuaj yeem ua rau muaj kev nkag mus rau sab hauv ntawm lub davhlau thiab txo qis qhov ntsuas qhov muaj peev xwm los tsim cov zis ruaj khov tiv thaiv kev tuag siab. Rounded ya davhlau ntug, qhab nia, corrosion, txheej poob los yog ib tug loj chim bore kuj hloov melting thiab ntws.
Tsis txhob kuaj xyuas hnav los ntawm cov sij hawm ua haujlwm ib leeg. Kev nyab xeeb tshem tawm thiab ntxuav cov khoom, ntsuas ntawm cov ntaub ntawv axial txoj haujlwm, thiab sib piv nrog qhov loj me lossis cov khoom tsim cov qauv pom zoo. Nanhaiya's article onntxov ntxov ib leeg-ntsia hlau hnavmuab kev txheeb xyuas ntsig txog abrasive, corrosive, txheej txheem thiab txij nkawm yam.
Thaum twg lub hau ntswj los yog lub thoob ua lub luag haujlwm?
Cov ntsia hlau hnav thiab lub thoob yog qhov tsis txaus ntseeg thaum cov khoom siv tib yam thiab lub qhov rais ua haujlwm tsis tsim cov khoom siv dhau los, kev ruaj khov siab lossis yaj tsis sib xws - thiab pub, tsav tsheb, ntsuas kub, cuab yeej thiab ntsuas tau raug kuaj xyuas lawm. Kev ntsuas yuav tsum paub meej qhov kev kuaj mob.
Kev hloov pauv kuj tsim nyog xav txog thaum cov ntsia hlau tau tsim los rau cov dej num sib txawv. Ib tug ntsia hlau xaiv rau niaj hnub nkauj xwb pellets tej zaum yuav tsis coj zoo nrog loj hloov nyob rau hauv bulk ntom, muab tub lim cov ntsiab lus, regrind daim ntawv los yog yuav tsum tau throughput. Nanhaiya uaib leeg ntsia hlau chim xaiv phau ntawv qhiapiav qhia txog cov khoom noj, compression thiab metering zones thiab lub luag haujlwm ntawm L / D, compression thiab ntsia hlau hom.
Kev kho saum npoo ib leeg tsis kho qhov tsis sib haum xeeb hauv kev pub muaj peev xwm, melting ntev lossis metering geometry. Rau abrasive formulations, ahnav-resistant ib leeg ntsia hlau configurationtej zaum yuav tsim nyog, tab sis cov khoom siv, muab tub lim, kub, siab, ceev thiab qhov ntev uas twb muaj lawm yuav tsum tau tshuaj xyuas ua ntej cov khoom siv lossis txheej txheej tau teev tseg.
Cov ntaub ntawv dab tsi koj yuav tsum xa mus rau lub tshuab ntsia hlau thiab lub thoob?
Ib qho RFQ muaj txiaj ntsig yog ntau dua ib txoj kab uas hla thiab tag nrho ntev. Txhawm rau tshawb xyuas qhov tshwm sim los yog rov tsim dua ib qho uas twb muaj lawm, npaj cov hauv qab no:
- Extruder hom, qauv thiab cov ntaub ntawv serial qhov twg muaj
- Thawj cov ntsia hlau thiab lub thoob kos duab kos duab, los yog daim ntawv tiav
- Resin qib, additives, cov ntsiab lus muab tub lim thiab daim ntawv virgin/regrind
- Cov khoom tiav thiab cov cuab yeej siv: zaj duab xis, yeeb nkab, profile, ntawv, strand lossis granulation
- Li qub thiab tsis ruaj khov throughput, ntsia hlau ceev, lub cev muaj zog load thiab yaj siab
- Thaj chaw teeb tsa thiab qhov ntsuas kub tiag tiag thaum lub sijhawm ruaj khov thiab tsis ruaj khov
- Siab, lub cev muaj zog-tam sim no thiab kab-ceev tiam sis nrog lub sij hawm
- Cov duab ntawm lub davhlau ntug, cov hauv paus hniav, cov qhab nia, corrosion thiab txhua qhov chaw puas
- Ntsuas ntsia hlau sab nraud diameters thiab chim bore txoj hauj lwm, nrog rau txoj kev siv
- Kev khiav hauj lwm keeb kwm: cov khoom siv hloov pauv, kev saib xyuas, kev ua kom huv si lossis kev nrawm nrawm ua ntej qhov teeb meem
Los ntawm kev pom ntawm lub Hoobkas, cov ntaub ntawv no cais peb txoj haujlwm sib txawv: rov tsim dua ib qho kev tsim OEM tsis zoo, rov ua dua geometry, lossis rov tsim cov ntsia hlau rau cov khoom hloov pauv thiab cov khoom tsim tawm. Kev sib xyaw cov hauj lwm hauv ib nqe lus caw qhov kev daws teeb meem tsis raug.
LDPE / HDPE zaj duab xis ib leeg ntsia hlau
Siv cov khoom lag luam no thaum cov kab tsis ruaj khov tsim cov tshuab ua yeeb yaj kiab lossis cov ntawv thov ntim-zaj duab xis.
Pob tshab granulation ib leeg ntsia hlau
Siv txoj hauv kev no rau pob tshab-cov ntaub ntawv pelletizing, qhov chaw pub khoom sib xws, kev sib kis thiab qhov chaw zoo yuav tsum tau tswj kom zoo.
Aluminium-yas vaj huam sib luag ib leeg ntsia hlau
Siv nplooj ntawv no rau kev tsim khoom vaj huam sib luag thiab suav nrog cov qauv tsim, vaj huam sib luag dav thiab qhov yuav tsum tau ua.
Extruder ib leeg ntsia hlau chim
Siv cov khoom siv extrusion dav dav thaum daim ntawv thov xav tau kev kos duab raws li kev cai.
Nanhaiya tuaj yeem tshuaj xyuas daim ntawv thov, daim duab uas twb muaj lawm, txheej txheem txheej txheem thiab ntsuas qhov xwm txheej ua ntej sib tham txog kev hloov pauv. Qhov no txo qhov kev pheej hmoo ntawm kev rov tsim dua hnav, luam cov duab geometry uas tsis tsim nyog lossis kho qhov kev ua txhaum downstream raws li qhov teeb meem ntsia hlau.
Nug Nanhaiya los tshuaj xyuas koj daim ntawv thovYuav ua li cas kom txo tau rov qab surging
- Txuag lub hauv paus ruaj khov.Khaws cov resin, pub tus nqi, ntsia hlau ceev, qhov kub thiab txias, pressures, lub cev muaj zog load, tso zis thiab downstream speeds ua ke.
- Trend cov nqi tiag tiag.Cov keeb kwm setpoint tsis tuaj yeem nthuav tawm qhov tsis ua haujlwm sensor, tsav kev sib txawv lossis cov khoom siv hluav taws xob caij tsheb kauj vab.
- Tswj cov khoom hloov pauv.Record bulk density, particle form, fines, moisture requirements, regrind percentage and additive changes.
- Txhais cov txheej txheem hloov pauv thiab ntxuav.Puag lawv ntawm cov khoom siv, siab keeb kwm, tshuab phau ntawv thiab pom zoo cog kev xyaum.
- Taug qab cov xwm txheej.Sau cov zis thiab siab ntawm qhov kev siv rov ua dua, tom qab ntawd ntsuas cov ntsia hlau thiab lub thoob thaum lub sijhawm tu.
- Saib xyuas cov ntsia hlau thaum lub luag haujlwm hloov.Cov zis ntau dua, ib qho polymer tshiab, muab tub lim ntau dua lossis ib daim ntawv sib txawv tuaj yeem txav mus rau sab nraud ntawm lub qhov rais geometry.
Cov lus nug uas nquag nug
Dab tsi yog qhov feem ntau ua rau ib leeg ntsia hlau extruder surging?
Kev noj zaub mov tsis sib haum yog qhov pib tshwm sim, tab sis tsis muaj ib qho laj thawj thoob ntiaj teb. Paub meej tias hopper thiab pub tus cwj pwm, tom qab ntawd correlate melt siab nrog lub cev muaj zog load, ntsia hlau ceev, kub thiab downstream ceev ua ntej txiav txim siab.
Puas tuaj yeem ua kom kub kub tuaj yeem nres?
Nws tuaj yeem hloov pauv qhov cuam tshuam txog melting, tab sis nws kuj tuaj yeem ua rau ntxov melting nyob ze ntawm cov khoom noj los yog degrade cov khoom kub-rhiab. Tshawb xyuas qhov ntsuas kub tiag tiag thiab hloov ib cheeb tsam ntawm ib lub sijhawm nyob rau hauv cov resin thiab lub tshuab xa khoom lub qhov rais ua haujlwm pom zoo.
Yog vim li cas surging zuj zus zuj zus ntawm cov ntsia hlau ntau dua?
Tus nqi siab dua tuaj yeem nthuav tawm cov kev txwv hauv kev pub mis, khoom thauj khoom, melting lossis metering. Yog hais tias lub siab thiab lub cev muaj zog-load variation nce nrog ceev, rov qab mus rau qhov kawg ruaj khov thiab sib piv cov ntaub ntawv tus nqi, kub tus cwj pwm thiab ntsia hlau geometry.
Cov ntsia hlau hnav puas tuaj yeem ua rau lub siab hloov pauv?
Yog lawm. Ua kom cov ntsia hlau-rau- chim tshem tawm tuaj yeem ua kom cov dej ntws tawm thiab txo qhov ruaj khov tsim. Paub meej tias nws nrog kev ntsuas qhov ntev thiab kev sib piv rau tus qauv tsim lossis pom zoo txwv tsis pub siv sijhawm ua haujlwm ib leeg.
Kuv tuaj yeem qhia tau li cas seb lub extruder lossis lub hau-tawm yog ua rau kev ntsuas qhov sib txawv?
Trend melt siab thiab cov khoom qhov ntev ua ke. Yog tias lub siab thiab cov zis nyob ruaj khov thaum lub voj voog ntawm cov khoom lag luam, tshawb xyuas qhov nrawm nrawm, traction, txias, lub tshuab nqus tsev lossis winding. Yog tias lub voj voog siab nrog cov khoom lag luam, txuas ntxiv tshawb xyuas txoj hauv kev extrusion ntws.
Kuv yuav xa dab tsi thaum thov hloov ib qho ntsia hlau?
Xa lub tshuab qauv, ua tiav kev kos duab lossis kev ntsuas, resin thiab additives, cov khoom, ib txwm tso tawm, ntsia hlau ceev, siab thiab lub cev muaj zog-load tiam sis, qhov teeb meem tam sim no, kev khiav hauj lwm keeb kwm, thiab cov duab meej meej. Qhia seb koj puas xav tau qhov hloov pauv tiag tiag lossis kev tshuaj xyuas tsim qauv rau cov kev hloov pauv.
Xa Nanhaiya Koj Cov Ntaub Ntawv Tshaj Tawm thiab Ntsia Hlau Drawing
Zhoushan Nanhaiya Yas Machinery Co., Ltd.manufactures ib leeg screws, chim thiab daim ntawv thov tshwj xeeb ntsia hlau daws nyob rau hauv Zhoushan, Suav teb. Rau qhov kev tshuaj xyuas muaj txiaj ntsig zoo, suav nrog koj cov khoom siv polymer, cov khoom lag luam, cov zis, cov ntsia hlau ceev, kev sib hloov siab, lub cev muaj zog, qhov ntev thiab cov duab uas twb muaj lawm.
Xa Kev Tshawb Fawb Txog Kev Tshawb Fawb Saib Cov Kev Xaiv Ib LeegEmail:info@nhyscrew.com ib
Xov tooj:+86-13505809643· Txawb:+86-13587082002
Chaw nyob: Block C, No. 2 West Section, Xingzhou Avenue, Dinghai District, Zhoushan City, Zhejiang Province, Suav teb
