Sarrafa CNC na Sassa na Babur na Musamman: Jagoran Karshe na Daidaito da Keɓancewa

Idan kai masoyin babur ne, mai gina shi, ko mai kera shi, kuma kana son haɓaka aiki, ɗorewa, da salo, yin kayan babur na musamman ta CNC shine mafita mai sauya wasa da kake buƙata. Fasahar Computer Numerical Control (CNC) ta sake fasalta yadda ake tsara da kuma samar da sassan babur, tana ba da daidaito marar misaltuwa, keɓantawa, da amintuwa waɗanda hanyoyin kera na gargajiya ba za su iya kaiwa ba. Daga baburan tseren masu ƙarfi sosai zuwa cruisers na musamman guda ɗaya, sassan da CNC ta sarrafa suna sauya kowane bangare na kwarewar tuki—ko kana sabunta wani ɓangare ɗaya ne ko kuma kana gina babur daga tushe.

Sassan Babur na Musamman
Sassan Babur na Musamman

A cikin wannan cikakken jagora, za mu rufe duk abin da kake buƙatar sani game da sarrafa CNC don sassan babur na musamman, ciki har da manyan fa'idodi, nau'ikan sassa da suka fi shahara, hanyoyin kera, zaɓin kayan aiki, zaɓuɓɓukan keɓancewa, abubuwan da ke shafar farashi, da yadda HLW Yana amfani da wannan fasaha don ƙirƙirar sassa na matakin farko ga masu hawa da masana'antun.

Menene sassan babur na musamman da aka yi da injin CNC?

Sassan babur na musamman da aka sarrafa da CNC sune sassa da aka ƙera daidai-daidai ta amfani da injinan kwamfuta da ke bin ƙirar dijital daga manhajar CAD (Computer-Aided Design). Wannan tsarin atomatik yana kawar da kuskuren ɗan adam, yana tabbatar da cewa an samar da kowane sashi yadda ya kamata. Takamaiman ƙayyadaddun bayanai da ƙuntatattun iyaka (har zuwa ±0.0005 inci ga mahimman sassa). Ba kamar sassan da ake kera da yawa ta zuba ko ta nika ba, sassan babur na musamman na CNC an tsara su ne don bukatun aikinku na musamman, zaɓin jin daɗin ergonomic, da hangen nesa na kyawu—ko dai saitin sandunan riƙon hannu na musamman ne, mai haske titaniyam Tsarin fitar hayaki, ko murfin injin na musamman da aka sassaka da laser.

HLW ta ƙware wajen mayar da ƙirar CAD zuwa sassa na zahiri, tana da ikon ƙirƙirar samfuran gwaji na ɗaya, ƙananan tarin gina na musamman, da kuma manyan samarwa ga OEMs da alamomin inganci na kasuwar bayan-talla. Kowanne sashi ana sarrafa shi da injin don ya dace ba tare da matsala ba da babur ɗinku, yana tabbatar da ingantaccen aiki da kammala cikakke.

Muhimman fa'idodin sarrafa CNC don sassan babur na musamman

Aikin CNC ya bambanta da hanyoyin kera na gargajiya (zuba, nika, da buga) saboda fa'idodi na musamman, wanda ya sa ya zama ma'aunin zinariya ga sassan babur na musamman. Ga dalilin da ya sa masu hawa babur da masu gina su ke zaɓar CNC:

Daidaito da sahihanci marasa misaltuwa

Na'urorin CNC suna kera sassa da daidaito na ɓangarori kaɗan na millimita, suna tabbatar da daidaitaccen haɗi da aiki a duk tsarin babur. Matakan daidaito masu tsauri suna kawar da karkacewa, gogayya, da rashin ingancin aiki—abin muhimmanci ga sassa masu ɗaukar matsin lamba kamar caliper na birki, mahadinan dakatarwa, da sassan injin. Wannan daidaito yana ƙara tsaro da inganci kai tsaye, musamman ga tseren babur da tuƙi mai ƙarfi.

Ƙarfi da ɗorewa na musamman

Ana sarrafa sassan CNC daga Kayan inganci sosai, na matakin aiki (Aluminiyamu, karfe, titanium, carbon fiber) kuma an ƙera su da ƙarancin matsin tsari ko rauni. Tsarin ƙera ta hanyar cirewa (yankan kayan daga guntu mai ƙarfi) yana samar da sassa masu ƙarfi da juriya ga lalacewa fiye da sassan da aka zuba, waɗanda sau da yawa ke da nakasu da ba a gani ba. Sassan da CNC ta sarrafa suna jure yanayin tuki mai tsanani, girgiza, da ƙarfin juyawa, suna rage buƙatar sauya su akai-akai.

Sassan babur na musamman
Sassan babur na musamman

Gyare-gyare marar iyaka da keɓancewa

Wannan shi ne babban abin jan hankali ga masu gina babura na musamman: sarrafa CNC yana ba ka damar ƙirƙira 100% sassa na musamman da ke nuna salonka da burin aikinka. Ba za ka sake yarda da ƙirar da aka riga aka tanada ba—za ka iya keɓance kowane ɓangare, daga siffar sandunan riƙo da matattaran ƙafa har zuwa ƙarewar murfin injin da tsarin aerodinamics na bututun fitar hayaki. Rubutun laser, ƙarewar musamman, da siffofi na musamman duk ana iya yi, suna sanya baburinka ya zama na musamman guda ɗaya.

Sassa masu sauƙin nauyi don sarrafawa mafi kyau

Fasahar CNC tana ba da damar ƙirƙirar Sassa masu sauƙi amma masu ƙarfi ta hanyar inganta amfani da kayan aiki da siffa. Sassa masu nauyi kaɗan (misali, ƙafafun aluminium, sassan dakatarwa na titanium) suna rage jimillar nauyin babur, suna inganta hanzari, birki, juyawa, da ingancin amfani da mai. Misali, ƙafafun aluminium da aka sarrafa da CNC na iya zama har zuwa 30% mafi sauƙi fiye da na ƙarfe, yayin da sassan titanium ke ba da ajiyar nauyi na 45% ba tare da rage ƙarfi ba.

Ingancin farashi a dogon lokaci

Duk da cewa sassan CNC na musamman suna da tsadar farko fiye da sassan da ake kera su da yawa, suna samar da manyan ajiyar kudi a dogon lokaci. Dorewarsu na nufin a yi gyare-gyare da maye gurbi kaɗan, kuma daidai suke rage lalacewar sassan da ke kusa (misali, sprocket da aka sarrafa shi daidai yana rage lalacewar sarkar). Ga masu kera da masu hawa babur masu sha'awa, wannan zuba jari yana biya kansa ta hanyar ingantaccen aiki, rage gyare-gyare, da tsawaita rayuwar babur ɗinku.

Gaggauta kammala samarwa

Da zarar an kammala ƙirar CAD, injunan CNC suna fara samarwa nan take—ba buƙatar dogon lokaci wajen ƙirƙirar ƙira ko die (ba kamar zuba ko nika ba). Wannan ya sa CNC ya dace sosai don gina na musamman, samfuran gwaji, da ƙananan samarwa, inda HLW ke isar da sassa cikin 'yan kwanaki, ba makonni ba. Ko sassa masu rikitarwa za a iya sarrafa su cikin sauri ba tare da rage inganci ba.

Sassan Babur na Musamman Masu Shahara da Aka Yi da Injin CNC

Kusan kowane sashi na babur za a iya sarrafa shi na musamman ta fasahar CNC, daga ƙananan kayan haɗi zuwa muhimman sassan tsari. HLW ta ƙware wajen ƙirƙirar sassa na musamman masu daidaito sosai don dukkan tsarin babur, inda zaɓuɓɓukan da suka fi shahara su ne:

Sassan Injin

Kan silinda, pistons, murfin bawul, camshafts, da akwatin injin—an sarrafa su don cikakkiyar ƙonewa, isar da ƙarfi, da juriya ga zafi. Daidaitattun tazara suna tabbatar da ingantaccen aikin injin da rage lalacewa, ko da a lokacin RPM mai yawa.

Tsarin birki da clutch

Kalipar birki, silinda na babba, sandunan matse clutch, da rotar birki—sassa masu matuƙar muhimmanci ga tsaro inda daidaito ba za a iya sassauci ba. Yin aikin CNC yana tabbatar da aiki mai laushi da amintacce a ƙarƙashin yanayi mai tsanani na matsin lamba, tare da ƙira na musamman don dacewa da ergonomics na kekinka.

Sandunan riƙewa, matattaran ƙafa da lever

Sandunan tuki na musamman (an tsara su don yadda kake zaune yayin hawa), matattaran ƙafa na musamman (tare da ƙarin riƙewa don yanayi mai danshi da bushe), da maɓallan nauyi kaɗan—duk an sarrafa su don jin daɗi, iko, da kyawun gani. Rubutun laser da ƙarewar ƙira na musamman suna ƙara taɓawa ta keɓaɓɓe.

Sassan dakatarwa

Masu rage girgiza, haɗe-haɗe, maballan ɗora kaya, da sassan fork—sassa masu haske, masu ƙarfi sosai waɗanda ke daidaita sarrafawa, daidaito, da jin daɗin tuki. Sassan dakatarwa na musamman na CNC suna ba ka damar daidaita babur ɗinka don takamaiman ƙasa (filin tseren, hanyar waje, titi).

Sassan tsarin tuki

Sproket, murfin sarkar, cibiyar taya, da giyar—an sarrafa su don canja wurin ƙarfi cikin santsi da rage gogayya. Ana iya tsara sproket na musamman don daidaita rabo na giyar domin inganta hanzari ko ƙara saurin kololuwa.

Sassa na Musamman na Kyau da Kariya

Murfin injin, murfin tankin mai, bangarorin jiki, murfi na waje, da kayan ado na carbon fiber—sassa da ke haɗa salo da aiki. Injin CNC yana ƙirƙirar ƙira masu santsi da ingantaccen kwararar iska, tare da yankan laser/ƙirƙirar rubutu da ƙarewar saman na musamman don samun kallo na daban.

Sassan firam

Brackets na musamman, sassan firam, da faranti na ɗorawa—ƙarfafa, sassa masu sauƙin nauyi waɗanda ke inganta ƙarfin tsarin babur da dacewar amfani da shi. Sassan firam na CNC sun dace sosai don gina babura na musamman inda daidaito da ƙarfi suke da matuƙar muhimmanci.

Sassan babur na musamman
Sassan babur na musamman

Tsarin sarrafa CNC don sassan babur na musamman

HLW na amfani da tsarin sarrafa CNC na zamani mai matakai da yawa don ƙirƙirar sassan babur na musamman, ta haɗa injuna masu ci gaba da tsauraran matakan kula da inganci don tabbatar da cikakken kammala a kowane mataki. Manyan matakai sun haɗa da:

1. Zane na CAD & Shirye-shiryen CAM

Aikin yana farawa ne da cikakken zanen CAD (wanda ƙungiyarku ko ƙwararrun injiniyoyin HLW suka ƙirƙira) wanda ke fayyace ƙayyadaddun bayanai, girma, da iyakokin daidaito na sashin na musamman. Daga nan, ana mayar da wannan zane zuwa lambar da injin zai iya karantawa ta amfani da manhajar CAM (Computer-Aided Manufacturing), wadda ke gaya wa injin CNC yadda ya kamata ya yanke, ya siffanta, da ya kammala kayan.

2. Niƙa ta CNC

Mafi yawan amfani a matsayin tsarin yin sassan babur na musamman, Niƙa ta CNC Yana amfani da kayan yankan da ke juyawa don cire kayan daga tubalin mai ƙarfi a kan layuka da yawa (3, 4, ko 5-axis). Yana da kyau wajen ƙirƙirar sassa masu rikitarwa, waɗanda ba su da siffar silinda, kamar murfin injin, sandunan riƙewa, da maballan ɗaurewa, tare da matakan daidaito har zuwa ±0.001 inci. Yin 5-axis milling a HLW yana ba da damar ƙirƙirar siffofi masu rikitarwa da samar da su a cikin guda ɗaya don sassa masu wahala.

3. Juya CNC

Ana amfani da shi don sassa masu siffar silinda (tushen ƙugiya, bututun fitar hayaki, sandunan rataye), Juya CNC Yana juyar da kayan a lathe yayin da wuka mai yankan ke siffanta shi bisa takamaiman ƙayyadaddun bayanai. Wannan tsari yana samun matakan daidaito masu matuƙar ƙanƙanta (±0.0005 inci) da cikakken daidaito, wanda yake da muhimmanci ga sassa da ke buƙatar juyawa mai laushi da daidaito.

4. Yankan Laser & Sassaka

HLW na amfani da yankan laser mai ƙarfi don samun yankan daidai, masu tsabta a cikin kayan siriri (misali, bangarorin jiki, kariyar sarkar) da siffofi masu rikitarwa. Rubutun laser yana ƙara bayanan keɓaɓɓu—logos, rubutu, tsaruka—a sassa kamar murfin injin, sandunan riƙon hannu, da matattarar ƙafa, yana ɗaga kyawun kekinka ba tare da rage ingancinsa ba.

5. Kammala saman da sarrafa bayan aiwatarwa

Kowane sashi na CNC na musamman yana fuskantar ƙarin sarrafawa bayan kammala shi don ƙara ɗorewa, juriya ga tsatsa, da kyawun bayyanar. HLW tana ba da cikakken zaɓi na maganin saman:

  • AnodizationDon sassan aluminium—yana ƙirƙirar layin oxide mai ɗorewa, yana ƙara launi (matte, mai sheki, launuka masu ƙarfi), kuma yana ƙara juriya ga tsatsa (fayyace mai ƙarfi sau uku).
  • GyaraYana ba da ƙarewa mai sheki kamar madubi wanda ke hana datti da tsatsa (ya dace da bututun fitar hayaki da ƙafafun mota).
  • Feshin ƙwayoyiYana samar da ƙarewa mai laushi ba tare da sheki ba, yana cire nakasu a saman, kuma yana inganta riƙewa (ya dace sosai da sandunan ƙafafu da maɓalli).
  • Rufin fodaDon launi mai ɗorewa kuma mai juriya ga karcewa a kan sassan ƙarfe/titanium.

6. Tabbatar da Inganci Mai Tsanaki da Bincike

Inganci ba abin tattaunawa ba ne a HLW. Kowanne sashi na musamman ana gwada shi sosai kuma ana bincikensa gaba ɗaya don tabbatar da cewa ya cika ƙayyadaddun CAD da ƙa'idodin masana'antu:

  • Auna daidaiNa'urorin auna daidaito na haɗe-haɗe (CMM) da calipers suna duba girma har zuwa matakin mikron.
  • Gwajin ɗorewa da aikiGwajin matsin lamba, gwajin sawa, da gwajin aiki suna kwaikwayon yanayin hawa na ainihi (zazzabi mai tsanani, girgiza, nauyi).
  • Takardar shaida ta kayanDuk sassa suna zuwa da takardun bin diddigin kayan aiki da na bin ƙa'idodi don aikace-aikacen OEM da tseren mota.
Sassan babur na musamman
Sassan babur na musamman

Zaɓin Kayan Aiki don Sassan Babur na Musamman na CNC

Zaɓin kayan da ya dace yana da matuƙar muhimmanci ga sassan babur na musamman, domin yana shafar aiki, nauyi, ɗorewa, da farashi. HLW tana aiki da kayan aji na aiki mafi inganci, kowanne an tsara shi don buƙatun kowane sashi. Ga bayanin zaɓuɓɓuka mafi yawan amfani:

Kayan aikiMuhimman fa'idodiAmfanin Sassa na Musamman
Haɗaɗɗun aluminium (6061-T6, 7075)Mai haske, mai juriya ga tsatsa, mai sauƙin sarrafawa, da kyakkyawan dangantakar ƙarfi da nauyiSandunan riƙewa, murfin injin, matattaran ƙafa, ƙafafu, maballan rataye
Karatun baƙin ƙarfeMai ƙarfi sosai, mai juriya ga tsatsa, mai ɗorewa, ya dace da yanayi masu tsanani na matsin lambaTsarin birki, bututun fitar hayaki, sassan firam, kayan haɗi
Haɗaɗɗun TitaniumYa fi ƙarfe haske, ya fi aluminium ƙarfi, ba ya tsatsa, yana jure zafiTsarin fitar da hayaki, sassan dakatarwa, ƙugaye, sassan injin masu aiki mai ƙarfi
Zaren KarbonMai matuƙar sauƙin nauyi, ƙarfi sosai na tsari, kyan gani mai santsiBangarorin jiki, murfi na waje, murfin injin, kayan ado (bangarori marasa tsari)

Ƙungiyar injiniyoyin HLW za ta taimaka maka zaɓar kayan da ya fi dacewa don sashinka na musamman, ta daidaita aiki, nauyi, farashi, da yanayin tuki (misali, titanium don yanayi masu tsauri a waje da hanya, aluminium don babura na titi da ke fifita saurin motsi).

Abubuwan da ke shafar farashin sassan babur na musamman na CNC

Farashin sassan babur da aka ƙera ta CNC na musamman yana bambanta dangane da wasu muhimman abubuwa, inda HLW ke ba da farashi a bayyane da zaɓuɓɓuka masu sassauci don samfuran gwaji, ƙananan tarin kaya, da samarwa mai yawa. Manyan abubuwan da ke haifar da tsadar su ne:

1. Rikitarwar ƙira

Zane-zane masu rikitarwa (misali, siffofin 3D, ƙuntataccen daidaito, sassaka da laser) na buƙatar ƙarin lokacin sarrafawa, kayan aiki na musamman, da shirye-shiryen CAM—wanda ke ƙara farashi. Sassan da suka fi sauƙi (misali, maƙallan asali) sun fi dacewa da kasafin kuɗi.

2. Zaɓin Kayan Aiki

Kayan aiki na musamman (titanium, carbon fiber) sun fi aluminium ko ƙarfe tsada saboda ƙarin farashin kayan da na sarrafawa (titanium yana da wuya a yanke). Aluminium shine zaɓi mafi araha ga yawancin sassa na musamman.

3. Yawan samarwa

Sassan al'ada na sau ɗaya ko samfuran gwaji suna da tsadar kowace raka (saboda lokacin saiti da ƙira), yayin da samarwa a babban adadi ke cin gajiyar tattalin arzikin girma—HLW na rage tsadar kowace raka ga manyan odar.

4. Kammala saman da sarrafa bayan aiwatarwa

Kammala na musamman (anodizing, zanen laser, bead blasting) suna ƙara farashi, amma suna kuma ƙara ɗorewa da kyawun gani—zuba jari ne a darajar ɓangarorinku na dogon lokaci.

5. Bukatun juriya

Matakan daidaito masu matuƙar ƙanƙanci (misali, ±0.0005 inci ga sassan injin da na rataye) na buƙatar sarrafawa da bincike masu daidaito sosai, wanda ke ƙara lokacin samarwa da farashi.

HLW yana ba da Injiniyan bayar da farashi nan take don sassa na musamman na CNC, samar da ra'ayin DFM (Zane don Kera), lokutan isarwa, da farashi cikin 'yan dakikoki—ka loda fayil ɗin CAD ɗinka (STEP, Mesh, Parasolid, ACIS) don samun farashi na musamman.

HLW: Abokin Dogaranku wajen Yin Na'urorin Babur na Musamman ta CNC

HLW ita ce jagorar mai ba da sabis na CNC na daidaito don sassan babur na musamman, tana yi wa masu hawa babur, masu gina babur na musamman, OEMs, da kamfanonin ingancin kasuwar bayan-talla a duk faɗin duniya. Cibiyar mu ta zamani a China tana da injunan CNC na milling da turning masu axis da yawa, fasahar yankan laser da zanen laser, da tsananin tsarin kula da inganci mai takardar shaida ta ISO 9001:2015—tana tabbatar da cewa kowanne sashi ya cika mafi girman ƙa'idodin daidaito, ɗorewa, da inganci.

Abin da HLW ke bayarwa

  • Sarrafa injin na musamman daga farko har ƙarsheTallafin ƙirar CAD, ƙirƙirar samfurin farko, ƙera kayayyaki na musamman a ƙananan adadi, da samarwa a babban adadi.
  • Zaɓi faɗi na kayan: aluminium, bakin ƙarfe, titanium, carbon fiber, da sauransu.
  • Kammala cikakke: Anodizing, gogewa, fashewar ƙwayoyi, sassaka da laser, rufewar foda.
  • Juyawa cikin sauri: Sassa ana isar da su cikin kwanaki, ba makonni ba—abin muhimmanci ga gina na musamman da haɓaka samfurin farko.
  • Sirri mai tsauriYarjejeniyoyin NDA don kare ƙirar ku na musamman da dukiyar hankali.
  • Jigilar kaya ta duniyaIsarwa mai amintacce zuwa kowane kusurwa na duniya, tare da zaɓuɓɓukan jigilar kaya na cikin gida da na ƙasa da ƙasa.

Tuntuɓi HLW a yau

Shin kuna shirye ku sa hangen nesa na ɓangaren babur ɗinku na musamman ya zama gaskiya? Ko kuna buƙatar samfurin gwaji guda ɗaya, wani ɓangare na musamman guda ɗaya, ko samarwa mai yawa, HLW na da ƙwarewa da fasaha don isar da cikakkiyar inganci.

Wayoyi: +86 18664342076

Imel: info@helanwangsf.com

Tambayoyi da ake yawan yi (FAQs) game da sarrafa CNC na sassan babur na musamman

Shin sassan babur na musamman na CNC sun cancanci ƙarin kuɗi?

Tabbas. Sassan CNC na musamman suna ba da daidaito marar misaltuwa, ɗorewa, da inganci, kuma keɓantarsu yana ba ka damar tsara kekinka daidai da bukatunka. Ajiyar kuɗi na dogon lokaci (ƙarancin maye gurbin sassa, rage gyare-gyare) da ingantacciyar kwarewar tuki suna sanya su zama zuba jari mai amfani ga masu hawa da masu gina kekuna masu niyya.

Shin zan iya samun sashi na musamman na CNC don kowanne samfurin babur?

Eh. HLW na ƙera sassa na musamman don duk nau'ikan babura—choppers, baburan tseren, cruisers, dirt bikes, cafe racers, baburan yawon buɗe ido, da e-bikes. Muna aiki daga zanen CAD ɗinku ko kuma muna ƙirƙirar zane da ya dace da ƙayyadaddun bayanai na babur ɗinku.

Yaya tsawon lokacin da ake buƙata don ƙera wani sashi na babur na CNC na musamman?

Da zarar an kammala zanen CAD ɗinka, HLW na iya kera yawancin sassa na musamman a 3–7 kwanakin kasuwanci don samfuran gwaji/ƙananan tarin samarwa. Ayyukan samarwa masu yawa suna da lokutan isarwa masu sassauci gwargwadon girman odarka.

Sau nawa ya kamata in duba sassan babur na musamman da CNC ta ƙera?

Duba sassa masu matsanancin damuwa (birki, dakatarwa, sassan injin) duk lokaci 500–1,000 mil, da duk sassa bayan tuki ko tseren mai nauyi. Duba don gani idan akwai lalacewa, tsagewa, ko bololi da suka sassauta don tabbatar da ingantaccen aiki da aminci.

Shin HLW tana ba da haɓaka samfurin farko don sassan CNC na musamman?

Eh. HLW ta ƙware wajen ƙirƙirar samfurin gaggawa na sassan babur na musamman, yana ba ka damar gwadawa da inganta ƙirarka kafin a fara samarwa a cikakken mataki. Sabis ɗin samfurinmu yana da sauri, mai araha, kuma an tsara shi don tabbatar da cewa sashin ƙarshe ya zama cikakke.

Ra'ayoyi na ƙarshe

CNC machining ya kawo juyin juya hali a masana'antar babura na musamman, yana mayar da ƙirar ƙwarai zuwa gaskiya mai ɗorewa da aiki mai ƙarfi. Ko kana gina babur na musamman guda ɗaya ne ko kuma kana haɓaka wani ɓangare don ingantaccen aiki, sassan da CNC machining ke ƙera na musamman suna ba da daidaito, keɓantawa, da amintuwa da babu wata hanyar kera da za ta iya kaiwa.

HLW abokin dogaro ne a kowane mataki na aikin—daga ƙirar CAD da ƙirƙirar samfurin farko har zuwa samarwa da kammalawa. Tare da fasahar mu ta zamani, ƙungiyar injiniyoyi ƙwararru, da sadaukarwarmu ga inganci, za mu ƙirƙiri sassan babur na musamman na CNC waɗanda za su inganta hawan ku, a ciki da waje.

Tuntubi HLW a yau don fara aikin sassan babur na musamman ta CNC—mota cikakke da kake so tana nan ne kawai a cikin zane.

Wayoyi: +86 18664342076

Imel: info@helanwangsf.com

Tuntube mu

  • Zhengbing Cheng
  • Imel:info@helanwangsf.com
  • Wayar hannu: +86-18664342076 
  • Gundumar Longgang, Birnin Shenzhen, Lardin Guangdong, China