our company fully introduces international standard. By the past years efforts, we have already established a comprehensive integrated quality control system, with QC engineers inspecting goods at every stage of the manufacturing process. packing: Single boxes Outer packing:Solid cartons / pallets 1) 6000 series, 6200 series, 6300 series and 6400 series, 2) Corresponding types: 605 - 6012, 625 - 6211, 6300 - 6310.16000-16012 3) Material Used: GCr15 ---China, (AISI) 52100---American, (Din) 100Cr6---Germany; 4)Shield/closure: open bearing, Z, ZZ, RS, 2RS, 5)Snap ring: N, NR 6) Vibration and noise level: Z1, Z2, Z3 7) Precision level: P0, P6, P5 (ABEC1, ABEC3, ABEC-5) 8) OEM Service Serves or Not: Yes, we have been providing OEM service to many of our clients; 9) Fields Used In: Motor, Automobile, Precision Machinery, Electric Tools, Power Tools, Sports If anything of interest to you, please feel free to contact us, thanks! Looking forward to be a Good Business Partner of you.