Abokan haɗin gwiwa guda uku sun ba da gudummawar samarwa da ƙwarewar sarrafawa daban-daban da kuma farkon farkon su don samo Injin SPR a cikin 2002. Wannan shagon na'ura na Hamilton, Ohio ya girma daga ƙafar murabba'in murabba'in murabba'in 2,500 zuwa ƙafar murabba'in 78,000, tare da 14 mills rufe bene, da lathes. walda da duba...
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