NHAU > 20 Chikunguru 2026
Kutsvaga yakavimbika bvudzi refts actlesle vatengesi ve2026? Gwaro iri rinodonongodza mitengo yazvino yemusika, mazinga emhando, uye nzira dzekutsvaga kune vatengi vakawanda. Isu tinoongorora fekitori-yakananga sarudzo, magiredhi masisitimu, uye zvigadziriso zvekushandisa kubatsira salons nevashambadziri kuchengetedza premium inventory pasina kukanganisa miganho kana kuenderana.
Mamiriro e bvudzi refts actlesle iri kushanduka nekukurumidza sezvatinosvika 2026. Vatengi havasisiri kungotsvaga mutengo wakaderera pagiramu; iyo tarisiro yachinja zvine mutsindo kuenda kuhupenyu hurefu, kuchengetedzwa kwemavara, uye ehutsika yekutsvaga pachena. Weft yemhando yepamusoro inofanirwa kuchengetedza kutendeseka kwayo mushure mekugezwa kwakawanda uye masitaera ekuita.
Nyanzvi dzemaindasitiri zvino voisa pamberi yakapetwa kaviri uye yakapetwa kaviri maumbirwo pamusoro pesarudzo dzakadhonzwa. Aya magiredhi anovimbisa kuti kureba kwebvudzi kunoramba kuchienderana kubva pamudzi kuenda kune imwe, kuderedza kudonhedza uye kubata. Kune vatengesi vezvitoro, kunzwisisa misiyano iyi kwakakosha kuchengetedza kuvimba kwevatengi.
Uyezve, nzira yekugadzira weft inoita basa rakakosha. Muchina-wefted bvudzi rinopa kusimba uye kudhura-kushanda kwepamusoro-vhoriyamu kutengesa, nepo ruoko-akasungwa wefts anopa musono, asingaonekwi kupedzisa kwekumisikidza kwepamusoro. Sarudzo pakati peizvi inotsamira zvakanyanya pane yako tarisiro yedemographic uye yavo chaiyo yekuisa zvavanoda.
Sourcing muna 2026 inodawo kutarisisa ziso rekuti cuticle alignment. Remy bvudzi, uko ma cuticles anoramba akasimba uye akabatana mune imwe nzira, ndiyo indasitiri chiyero che premium wholesale mijenya. Non-Remy sarudzo dzinogona kutaridzika dzakachipa pakutanga asi dzinowanzo tungamira kune yakakwira mitengo yekudzoka nekuda kwekusangana, pakupedzisira ichikuvadza pundutso.
Kana uchiongorora vangangove vatengesi, zvakakosha kuti unzwisise iyo grading nomenclature inoshandiswa mumusika wepasi rose. Kunyangwe pasina dare rinotonga repasirese, mamwe mazwi ave akafanana neakananga emhando tiers.
Vatengesi vanofanirwa kukumbira makiti emuenzaniso vasati vazvipira kune maodha makuru. Kuongorora kwemaziso chete hakuna kukwana; tactile ongororo yekupfava, elasticity, uye kuita kune kupisa styling inopa chaiyo data inodiwa pakuita sarudzo.
Kuziva mutengesi akakodzera ndiro danho rakakosha pakuvaka bhizinesi rakabudirira rebvudzi. Musika uyu wakazara nevatengesi vanozviita vagadziri. Kuchengetedza chokwadi bvudzi refts actlesle madhiri, vatengi vanofanira kusiyanisa pakati pefekitari-yakananga masosi uye pakati.
Fekitari-yakananga vatengesi vanowanzopa yakaderera MOQs (Minimum Order Quantities) zvine hukama nekukoshesa uye nekupa maitiro ekugadzirisa akadai seyakavanzika label, tsika kurongedza, uye chaiyo kusanganisa kwemavara. Ivo vane hunyanzvi hwekugona kushandura ukobvu hweweft kana kugadzira hurefu hwetsika pazvinodiwa.
Mukupesana, makambani ekutengesa anowanzo unganidza masheya kubva kune akasiyana mafekitori. Nepo ivo vachigona kupa huwandu hwakakura hweazvino stock, mitengo yavo inosanganisira markup, uye kutonga kwemhando kunogona kusawirirana pamabhechi ese. Nekukura kwenguva refu muna 2026, kumisa mutsara wakananga wekugadzira zvinokurudzirwa.
Geographical origin inokanganisawo rudzi rwebvudzi rinowanikwa. Matunhu akasiyana ane hunyanzvi mune chaiwo maumbirwo, kubva kubvudzi reAsia rakatwasuka kusvika kune rakamonana reAfrica-America. Chakasimba chekugovera cheni chinowanzo batanidza kudyidzana nemafekitori akasiyana siyana pane kuvimba nemutengesi mumwechete "saizi-inokodzera-zvese".
Kune vatengi vari kutsvaga puratifomu yakasanganiswa yekubatana nevagadziri vakasimbiswa, zviitiko zveindasitiri zvinoita basa rakakosha. The China Hair Expo (CHE), yakatenderwa neBazi reCommerce rePeople's Republic of China uye yakarongwa neChina Chamber of Commerce for Import and Export of Light Industrial Products and Arts-Crafts, inomira seyekutanga B2B international platform. Kubva payakatangwa muna 2006, CHE yakabudirira kubata editions gumi neshanu, zvakatevedzana kuzivikanwa se "Kiyi Inotungamirwa uye Inotsigirwa Exhibition" neBazi reCommerce kwezvikamu zvina. Iyo inonyatsoratidza iyo yose yebvudzi ecosystem-kubva mawigi uye zvigadzirwa zvebvudzi kusvika kuhutano hwemusoro uye zvishongedzo-kubatanidza maitiro ekuratidzira nehunyanzvi kuchinjana. Kushandisa mapuratifomu akamisikidzwa akadaro kunobvumira vatengi vepasirese kukurudzira kudyidzana kwakadzama nemabhizinesi epamba, kuve nechokwadi chekuwana mikana inoshanda uye yakasarudzika yekutengeserana inofambisa budiriro yeindasitiri.
Kuvimbika ibwe repakona reEEAT musimboti. Paunenge uchiongorora mudiwa wekutengesa, tsvaga humbowo hweruzivo uye chiremera mumunda. Ivo vanopa kudzika kwakadzama kwemaitiro avo ekugadzirisa? Vari pachena here nezvekwakabva zvinhu zvavo?
Vatengesi vane mukurumbira vanozopa nyore mafoni mafoni kuti vaone nzvimbo yavo kana kuratidza live stock. Vanofanira kukwanisa kutsanangura maitiro avo ekuuraya utachiona, nzira dzekudhaya, uye nzvimbo dzekutarisa mhando. Dzivisa vatengesi vasina kujeka nezveketani yavo yekugovera kana kuramba kutumira pre-kutumira samples.
Chimwe chiratidzo chekuvimbika ndechekuenderana mukukurukurirana uye zvinyorwa. Mainvoice ehunyanzvi, mazwi ekutumira akajeka, uye zvikwata zvinoteerera zvevatengi zvinokurudzira kushanda kwakarongeka kunokwanisa kubata mahombe-hombe maodha pasina kukanganisa.
Pricing mu bvudzi refts actlesle chikamu chine simba, chinopesvedzerwa nekuwanikwa kwezvinhu, mutengo wevashandi, uye zvinhu zvepasi rose. Sezvo isu tichipinda muna 2026, mitengo yePrimum Remy bvudzi yakaona kudzikamiswa zvishoma nezvishoma zvichitevera kushanduka kwekare, kunyangwe maumbirwo egiredhi epamusoro anoramba ari mari yakakosha.
Mutengo pabundle kana kilogiramu inosiyana zvakanyanya zvichienderana negiredhi. Bvudzi rakadhonzwa rimwechete rinoraira mutengo wakaderera, zvichiita kuti dziwanike pamisika yekupinda-chikamu. Nekudaro, muganho wekukanganisa wakadzikira, sezvo nyaya dzemhando yepamusoro dzinogona kumuka kakawanda. Bvudzi rakadhonzwa kaviri rinogara pakati pepakati, richipa yakanakisa chiyero chemutengo uye kuita kwemabhizinesi mazhinji.
Super kaviri yakadhonzwa uye mhandara isina kugadziridzwa bvudzi inomiririra yepamusoro mutengo tier. Izvi zvigadzirwa zvinoda kurongeka kwakakura uye kushomeka kwemakemikari kugadzirisa, zvichikwidza mutengo wevashandi. Zvisinei nemutengo wepamusoro wepamberi, kukosha kwekutengesa uye kuchengetwa kwevatengi kwakabatana nemagiredhi aya kazhinji kunopa chikonzero chekudyara.
Izvo zvakakosha kuti utarise mumitengo yakavanzika kana uchiverengera miganho yekupedzisira. Izvi zvinosanganisira mari yekutumira, miripo kubva kunze kwenyika, mvumo yekubvakacha, uye mari inobvira yekuchengetera zvinhu. Mutengo weuniti unoratidzika kunge wakachipa unogona kudhura kana zvinhu izvi zvekugadzirisa zvawedzerwa kune equation.
Kunzwisisa iwo chaiwo mutengo madhiraivha emhando dzakasiyana dzebvudzi kunobatsira mukugadzira emhando dzemitengo yevatengi vako yekupedzisira. Tafura iri pazasi inoratidza huwandu hwemitengo hunoonekwa pamusika uripo.
| Bvudzi Grade | Processing Level | Relative Cost | Best Use Case |
|---|---|---|---|
| Single Drawn | Yakakwirira (asidhi yekugezera, inorema silicone) | $ | Budget retail, temporary styles |
| Yakadhirowa Kaviri | Zvine mwero (dhayi mwenje, cuticle yakarongedzwa) | $$ | Yakajairwa salon kumisikidzwa, kupfeka kwemazuva ese |
| Super Double Drawn | Yakaderera (Minimal processing, yakarongedzwa nemaoko) | $$$ | Mhando dzemhando yepamusoro, kupfeka kwenguva refu |
| Mhandara Remy | Hapana (isina kugadziridzwa, ruvara rwechisikigo) | $$$$ | High-yekupedzisira customization, bleaching mapurojekiti |
Ziva kuti mitengo inochinja-chinja zvichienderana nekutsinhana kwemari uye kudiwa kwemwaka. Kuronga kutenga mukati memwaka usiri wepamusoro-soro dzimwe nguva kunogona kuunza zvirinani kutaurirana nevashambadziri.
Kuvakwa kweweft kunotarisa kuti bvudzi rinoita sei panguva yekuisa uye kupfeka. Kune vatengesi vezvitoro, kurongedza kwakasiyana siyana emhando dzekuvaka kunotendera iwe kuti utarise kune akasiyana stylist zvaunofarira uye nzira dzekuisa.
Muchina weft anogadzirwa achishandisa maindasitiri ekusona michina yekusona bvudzi panjanji. Iyi nzira inogadzira weft yakakora, yakasimba iyo inodhura-inoshanda kugadzira. Iwo akanakira vatengi vanotsvaga huwandu uye hupenyu hurefu, kunyanya kune yekusona-mu ma weave uko iyo track inozofukidzwa nemamwe matanda ebvudzi.
Nekudaro, machira emuchina anogona kuve akakora uye asingachinjiki. Ukobvu uhwu hunogona kukonzera nyaya dzekuonekwa kana yakaiswa padyo nechikamu mutsara kana munzvimbo dzine bvudzi-tete. Iwo akanyatsokodzera kune yakaderera akaturikidzana yekuisa uko kusimba kwakanyanya.
Zvisungo zvakasungwa nemaoko, zvakasiyana, zvinosanganisira kusungirirwa kwebvudzi nemaoko pamucheka mutete wedonje. Izvi zvinoita kuti pave nekutetepa, weft yakati sandara inorara isina musono paganda remusoro. Ndiyo sarudzo inosarudzika yemitsara yebead, tepi-ins, uye zvisingaoneki mabhedhi ekuwedzera uko kungwara ndiko kwakakosha.
Iko kutengeserana nemaoko-akasungwa wefts kune fragility. Haagone kuchekwa zvisina tsarukano pasina kuita njodzi yekuteura, sezvo kuita kudaro kunogura mapfundo akasungwa nemaoko. MaStylists anofanirwa kudzidziswa pamaitiro ekubata akakodzera kuti awedzere hupenyu hweizvi zvigadzirwa zvekutanga.
Musanganiswa wako wekutengesa unofanirwa kuratidza izvo zvinodikanwa zvemusika wako waunoda. Kana vatengi vako vekutanga vari mabheji epamusoro-vhoriyamu kana nyanzvi dzekuruka, huremu hunorema hwemachina weft muhurefu hwakasiyana hunogona kutyaira mari yakawanda.
Kana iwe uchipa nyanzvi dzekuwedzera dzepamusoro dzinotarisa pane zvakasikwa, zvitarisiko zvisingaonekwe, kuisa mari mumutsara wakasimba wemashonga akasungwa nemaoko akakosha. Vatengi ava vanowanzo gadzirira kubhadhara mari yemubhadharo weiyo isina musanganiswa musanganiswa uye nyaradzo inongopihwa nemaoko-akasungwa sarudzo.
Vatengesi vazhinji vakabudirira muna 2026 vari kutora nzira yakasanganiswa, vachipa marudzi ese ari maviri pasi peamburera imwechete. Iri zano rinoita kuti musika usvike uye unova nechokwadi chekuti zvisinei nemaitiro ekuisa, bhizinesi rako rine chigadzirwa chakakodzera chiripo.
Kuchengeta zviyero zvepamusoro mu bvudzi refts actlesle inoda kusimba kwemhando yekudzora (QC) maprotocol. Pasina nzira yakarongeka yekuedzwa, kusawirirana kunogona kutsvedza, zvichikonzera mukurumbira wakakuvadzwa uye kurasikirwa kwemari.
Iyo yakazara QC maitiro inotanga padanho rezvinyorwa. Kuongorora bvudzi mbishi kwehutsanana, kureba kufanana, uye cuticle kutungamira kusati kwagadziriswa kunodzivirira nyaya dzakawanda dzepasi. Kana maweft agadzirwa, sampling isina kurongeka kubva pabatch yega yega inodiwa.
Miedzo yakajairika inosanganisira iyo kuteura bvunzo, apo weft inokweshwa zvine simba kuyera kurasikirwa kwebvudzi. Kunyanya kudurura kunoratidza kusasonwa kwakashata kana kushaikwa kwema bonding agents. The tangle test zvinosanganisira kugeza nekuomesa bvudzi kakawanda kutarisa matting, izvo zvinoratidzira kukuvara kwe cuticle.
Kufanana kwemavara ndeimwe nzvimbo inokosha yekuongorora. Mune maodha akazara, kunyangwe misiyano mishoma mumumvuri pakati pemabhechi inogona kunetsa kune ma stylists anofananidza mavara evatengi. Vatengesi vanofanira kupa mhete dzeruvara uye voona kuti maodha akawanda anoenderana nematanho aya chaizvo.
Kukwanisa kuziva kukanganisa kunokurumidza kuchengetedza nguva nemari. Heano nyaya dzinowanzo sangana mukutengesa bvudzi kutakura:
Kugadzira mutemo wakajeka wekudzoka uye chikanganiso chekuzivisa nzira nemupi wako kwakakosha. Vatengesi vehunyanzvi vanomira kuseri kwechigadzirwa chavo uye nekupa zvinotsiva zvezvakagadzirwa zvakakanganisika.
Global supply chain dziri kuramba dzichiwedzera kuoma, uye kufamba-famba zvinhu chinhu chakakosha chekubudirira kwemabasa ekutengesa. Kunzwisisa Incoterms, nzira dzekutumira, uye zvinodikanwa zvekutonga kwakakosha pakuita zvakanaka.
Zvizhinji zvekutengesa bvudzi zvinoshandisa FOB (Yemahara paBhodhi) kana EXW (Ex Works) mazwi. Pasi peFOB, mutengesi anobata mari kusvika zvinhu zvatakurwa muchikepe, mushure mezvo mutengi anotora mutoro. EXW inoisa mutoro wese pamutengi kubva kugedhi refekitari.
Kutakura zvinhu nemhepo kunopa kumhanya, kazhinji kuendesa zvinhu mukati memazuva mashanu-10, asi nemutengo wakakwira zvakanyanya. Inokodzera kukurumidza restocks kana yakakwirira-kukosha, yakaderera-huremu zvinhu seyaumbozha yakasungwa nemaoko weft. Kutakura zvinhu mugungwa kune mari kune mahombe vhoriyamu maodha asi zvinoda nguva dzekutungamira dzemazuva makumi matatu kusvika makumi mana nemashanu kana kupfuura.
Mitemo yetsika inosiyana nenyika. Vatengesi vanofanirwa kuziva nezvemabasa, mutero, uye chero zvinyorwa zvinodikanwa kune zvigadzirwa zvebvudzi revanhu. Mamwe matunhu ane mirau yakasimba yehutsanana kana zvinodikanwa zvekunyora izvo zvinofanirwa kuzadzikiswa kudzivirira kubatwa kana kunonoka.
Inoshanda inventory manejimendi inodzivirira kuwandisa-inononoka-inofamba zvinhu uye stockouts yakakurumbira mimvuri. Kuongorora data rekutengesa kufanotaura mafambiro kwakakosha. Semuyenzaniso, mimvuri yakareruka senge blonde uye balayage kazhinji ine nguva yakareba yekutungamirira nekuda kwekugadzirisa kunodiwa.
Kuchengetedza chengetedzo yemavara epakati (1b, 2, 4, 6) inova nechokwadi chekuti unokwanisa kuzadzisa mirairo yenguva dzose nekukasira. Mavara emwaka kana fashoni mimvuri yefashoni inofanirwa kuodha mune madiki, akawanda mabhechi kuti aenderane nekuchinja zvinodiwa nevatengi pasina kusunga mari.
Kushandisa inventory manejimendi software kunogona kukwenenzvera iyi maitiro, ichipa chaiyo-nguva kuoneka mumasheya mazinga uye otomatiki reorder mapoinzi. Uku kubatanidzwa kwetekinoroji kuri kuwedzera kuve chiyero chemakwikwi ekutengesa mabhizinesi muna 2026.
Mutengi wemazuva ano ari kuwedzera kuziva nezvehutsika hwekutenga kwavo. Muindasitiri yebvudzi, izvi zvinoturikira kukuda kwekujeka maererano nekwakabva bvudzi uye mamiriro ayo akaunganidzwa.
Ethics sourcing inovimbisa kuti vanopa rubatsiro vanobhadharwa zvakaringana uye kuti kuunganidza kunoremekedza kodzero dzevanhu. Vatengesi vanogona kuonesa nekutaura hunhu hwavo hwetsika vanowana mukana wekukwikwidza. Zvitupa kana zvakanyorwa zvekutengesa cheni maodhisheni anowedzera danho rekuvimbika.
Sustainability zvakare inosvika pakurongedza uye kugadzirisa. Eco-inoshamwaridzika packaging mhinduro uye yakaderedzwa kushandiswa kwemvura mukudhaya maitiro ari kuita mapoinzi ekutengesa. Zvigadzirwa zvinotora maitiro egirinhi zvinokwezva kune chikamu chiri kukura chevatengi vanoziva zvakatipoteredza.
Nepo “vegan” kana “synthetic” dzimwe nzira dziripo, kudiwa kwebvudzi chairo revanhu kunoramba kuriko muchikamu chehunyanzvi. Chinonyanya kutariswa pano ndechekuona kuti chinhu chemunhu chekutengesa chinobatwa neruremekedzo uye nekururamisira.
Kutaurira kuzvipira kwako kune tsika uye kusimba kunosimbisa kuvimbika kwemhando. Goverana nyaya nezvevakugovera, nharaunda dzinobatanidzwa, uye matanho akatorwa kuti uve nechokwadi chekutsvagirwa kwakanaka. Kujeka kunovaka chiremera uye kuvimba, zvakakosha zvikamu zveEEAT.
Dzivisa zvirevo zvisina kujeka se "bvudzi rehunhu" usingazvitsigire nezvakananga. Pane kudaro, tsanangura matunhu anotorwa bvudzi, hukama hwakavakwa nevanotora, uye matanho anotorwa kuratidza chokwadi. Ruzivo rwekongiri runosimbisa zvakanyanya nevatengi vane ruzivo.
Rondedzero iyi inofanirwa kuve yakarukwa muzvishandiso zvako zvekushambadzira, zvemukati zvewebhusaiti, uye kutaurirana zvakananga nevatengi. Inosiyanisa mhando yako mumusika wakazara vanhu uko mutengo unowanzova chinhu chinokwikwidza chete.
MOQs inosiyana zvakanyanya nemupi. Vagadziri vefekitari-zvakananga vangangoda maodha kutanga kubva pagumi makirogiramu kana makumi mashanu masumbu kuti vape mutengo wekutengesa. Nekudaro, vamwe vatengesi vanoitira madiki boutique ane MOQs akaderera se5 masumbu. Izvo zvakakosha kutaurirana mazwi anoenderana nekuyerera kwako kwemari uye kugona kuchengetedza.
Nguva dzekutumira dzinoenderana nenzira yakasarudzwa. Express air courier services (DHL, FedEx) inowanzoendesa mukati memazuva matatu kusvika manomwe ebhizinesi. Kutakura kutakura kwemhepo kunotora mazuva manomwe kusvika gumi nemaviri, nepo zvemugungwa zvichikwanisa kubva pamazuva makumi matatu kusvika makumi mashanu zvichienderana nechiteshi chezvikepe uye kushanda zvakanaka kwetsika.
Ehe, vagadziri vazhinji vane mukurumbira vanopa masevhisi ekugadzirisa. Iwe unogona kukumbira chaiwo mavara akasanganiswa, ombre mhedzisiro, uye hurefu hwetsika. Ziva kuti maodha akajairwa kazhinji ane nguva refu yekutungamira yekugadzira uye angangoda iyo MOQ yepamusoro kana ichienzaniswa neyakagadzirira-stock zvinhu.
Remy bvudzi rinochengeta yakasikwa cuticle alignment, kudzivirira kudonha uye kuve nechokwadi chehupenyu hurefu. Bvudzi risiri reRemy rakasanganiswa cuticle rairo, rinowanzo kubviswa kemikari kutevedzera kutsvedzerera, izvo zvinotungamira kukurumidza matting nekudurura. Nekushandisa kwehunyanzvi, Remy ndiyo chiyero cheindasitiri.
Chengetedza machira ebvudzi munzvimbo inotonhorera, yakaoma kure nechiedza chezuva. Zvichengete mumabhegi avo ekutanga kana masaga akavharwa kudzivirira kuunganidzwa kweguruva uye kuratidzwa kwemwando. Regedza kudzvanya bvudzi zvakanyanya, sezvo izvi zvinogona kushandura magadzirirwo uye wave pattern nekufamba kwenguva.
Navigating the bvudzi refts actlesle musika muna 2026 unoda musanganiswa wehunyanzvi ruzivo rwechigadzirwa, hukama hwevanopa hukama, uye kuzvipira kune mhando. Shanduko yakanangana neyakadhonzwa kaviri uye yepamusoro-inodhonzwa maumbirwo anoratidza musika unokoshesa hupenyu hurefu nekuita pamusoro pekutanga kuchengetedza mari.
Kubudirira muchikamu ichi kunoenderana nekugona kwako kusiyanisa kuburikidza nekuvimbika uye pachena. Nekuisa pamberi kutendeseka kwaRemy, kunzwisisa nuances yekuvaka weft, uye kuita dzakaomarara QC mapuroteni, unoisa bhizinesi rako semutungamiri ane chiremera muindastiri.
Gwaro iri nderei? Ongororo iyi yakarongedzerwa varidzi vesalon, mamaneja ekugovera, uye mabhizinesi emhando yerunako vanotarisa kuyera hesitori yavo nechivimbo. Kunyangwe iwe uri kuvhura mutsara mutsva kana kukwiridzira iripo cheni yekutenga, iyo misimboti yakatsanangurwa pano inopa nzira yekukura kwakasimba.
Sezvo iwe uchienda kumberi, tungamira kuvaka hukama hwakananga nevagadziri vakasimbiswa uye ramba wakasimba mukupindura maitiro emusika. Ita huchenjeri hwakakwana, kumbira samples, uye usambokanganisa pane yakakosha mhando yechigadzirwa chako. Mukurumbira wako ndiyo yako yakakosha pfuma muwholesale ecosystem.
Tora danho rinotevera nekuongorora yako yazvino yevatengesi runyorwa uchipesana neaya 2026 zviyero. Ziva mapundu mune yako hesera, ongorora nzira nyowani dzemagiredhi, uye funga kuti kutsvagisa kwetsika kunogona sei kusimudzira rondedzero yemhando yako. Remangwana rebvudzi rese ndereavo vanosanganisa bhizimusi acumen nekutendeseka kusingazungunuke.
2025 Kodzero Dzese Dzakachengetedzwa-China Bvudzi Revhu-Yakavanzika Policy