... bearings. Our main products are deep groove ball bearing of 6000 series,6200series,6300series,6700series,6800series,6900series. Our products are in good ... . Product range: MaterialChrome steel(GCr15)/Stainless steel 9Cr18(AISI440C)6000 series604~609,6000~60226200 series624~629,6200~62246300 series634~639,6300~63206700 ...