JiningQinfengMachineryHardwareCo.Ltd.-JiningQinfengMachineryHardwareCo.Ltdhassuccessfullydevelopedcolletchucks,CNCtoolsandotheraccessorieswithhighaccuracyandhighspeed,suchasERcollets(5μ/8μ),SKcollets(5μ/8μ),EOC(OZ)collets(10μ/5μ),C-straightcollets(10μ/5μ)andBT/SK(DIN69871)/CAT.HSKtapershankcolletchucks,aswellasotherprecisionaccessories.