Actually Components Partners:
Tire + Tube + Rim + Spoke:
HplusSon / Gipiemme / Ghisallo /  DT Swiss /  Panaracer
Hub (GOrilla . urban cycling loves cableless gears in the rear hub):
Gran Compe / Campagnolo / White Industries / Sturmey Archer / Miche
E – Hub:
Zehus
Stem:
Nitto / Cobra / Gran Compe / Veloorange
Handlebar:
Nitto / Nisi / Ghisallo / Edel-Rad
Headset:
Campagnolo / Miche / Hatta / Tange / Chris King / Dia Compe
Brake Lever:
Paul / Gran Compe / Dia Compe / Promax / Soma
Brakes:
Sugino / Dia Compe / Miche / Campagnolo
Crankset:
Schlumpf Innovation / Sugino / Campagnolo / Miche / White Industries
Chain:
Miche / Izumi / D.I.D
Bottom Bracket:
Campagnolo / Sugino / Miche / White Industries / Tange
Cog:
Sugino / Miche / White Industries / Soma / Sturmey Archer
Pedals and more:
MKS / Campagnolo / Holdfast / Soma
Saddle:
Gilles Berthoud / Selle San Marco / Kashimax / Grifalco / Cardiff
Seat Post:
Nitto / Miche / Campagnolo / Veloorange / Gran Compe / American Classic
Accessories:
Walnut / Lucetta – Light / Knog /  Abus / Waldsports / Sögreni / Crane Bell / Newbaum and more…