I-Dongguan Enuo mold Co., Ltd yinkampani engaphantsi kweHong Kong BHD Group, eyona nkampani iphambili kukwenza i-injection mold kunye ne-injection molding. Ngaphezu koko, i-Enuo mold ikwangumzi-mveliso we-OEM obandakanyeka kwi-surveying fixture/Gauge R&D, i-Die casting, i-CNC machining, i-Prototype products R&D, i-Parts spraying kunye ne-assembly.
I-mold ineenxalenye ezimbini eziphambili, i-injection mold (ipleyiti ye-A) kunye ne-ejector mold (ipleyiti ye-B). Ezi nxalenye zikwabizwa ngokuba yi-moulder kunye ne-moulder maker. I-resin yeplastiki ingena kwi-mold nge-sprue okanye isango kwi-injection mold; i-sprue bushing yenzelwe ukutywina ngokuqinileyo kwi-nozzle ye-injection barrel yomatshini wokubumba kwaye ivumele iplastiki enyibilikisiweyo ukuba ihambe ukusuka kwi-barrel iye kwi-mold, eyaziwa ngokuba yi-cavity. I-sprue bushing iqondisa iplastiki enyibilikisiweyo kwi-cavity img ngemijelo efakwe ebusweni beepleyiti ze-A kunye ne-B. Ezi mijelo zivumela iplastiki ukuba ihambe kuzo, ngoko ke zibizwa ngokuba zii-runners. Iplastiki enyibilikisiweyo idlula kwi-runner kwaye ingena kwisango elinye okanye ngaphezulu elikhethekileyo kwaye iye kwi-cavity geometry ukuze yenze inxalenye efunekayo.
Nangona ukuqikelela inani labantu bokuqala bomthonyama baseMntla Melika ngexesha lokudibana kwaseYurophu kunzima, kwenziwa umzamo ekuqaleni kwenkulungwane yama-20 nguJames Mooney esebenzisa iirekhodi zembali ukuqikelela inani labantu bomthonyama basemntla eMexico ngo-1600. Kwiminyaka yakutshanje, uDouglas H. Ubelaker weSmithsonian Institution uhlaziye la manani. Nangona u-Ubelaker eqikelela ukuba kukho inani labantu abangama-92,916 kumazwe asemazantsi e-Atlantic kunye nabemi abangama-473,616 kumazwe aseGulf, uninzi lwezifundiswa lubona eli nani liphantsi kakhulu.
