I-Dongguan Enuo mold Co., Ltd iyinxalenye yeQela le-Hong Kong BHD, ishishini elingundoqo kukuvelisa isitofu sokungunda kunye nokubumba inaliti. Ngaphaya koko, i-Enuo mold ikwangumzi-mveliso we-OEM osebenza kuhlolo lwe-fixture/Gauge R&D, Die casting, CNC machining, Iimveliso zePrototype R&D, Amacandelo okutshiza kunye nokuhlanganisa.
Umngundo uqulathe amacandelo amabini aphambili, i-injection mold (A plate) kunye ne-ejector mold (B plate). Ezi zixhobo zikwabizwa ngokuba sisibumba kunye nomyili. I-resin yeplastiki ingena kwi-mold nge-sprue okanye isango kwi-injection mold; i-sprue bushing kukutywina ngokuqinileyo ngokuchasene nomlomo wesitofu somgqomo womatshini wokubumba kunye nokuvumela iplastiki etyhidiweyo ukuba ihambe isuka emgqomeni iye kubumba, okwaziwa ngokuba ngumngxuma. I-sprue bushing iqondisa iplastiki etyhidiweyo kumngxuma img ngokusebenzisa imijelo eyenziwe ngoomatshini kubuso beepleyiti zika-A kunye no-B. Ezi tshaneli zivumela iplastiki ukuba ihambe ecaleni kwazo, ngoko zibizwa ngokuba ziimbaleki. Iplastiki etyhidiweyo iqukuqela kwimbaleki kwaye ingene kwisango elinye okanye angaphezulu akhethekileyo kwaye ingene kumngxuma wejometri ukwenza indawo efunekayo.
Ngelixa ukuqikelela abemi bomthonyama bokuqala baseMntla Melika ngexesha loqhagamshelwano lwaseYurophu kunzima, umzamo wenziwa ekuqaleni kwenkulungwane yamashumi amabini nguJames Mooney esebenzisa iirekhodi zembali ukuqikelela abemi bomthonyama kumntla weMexico ngo-1600. iminyaka, uDouglas H. Ubelaker weSmithsonian Institution uye wahlaziya la manani. Ngelixa u-Ubelaker eqikelela ukuba kukho abantu abangama-92,916 kumazantsi eAtlantiki kunye nabemi abangama-473,616 kumazwe aseGulf, uninzi lwezifundiswa lulijonga eli nani liphantsi kakhulu.
