lightweight full carbon stem EN standard, carbon bicycle stem 1.weave:3k/12k/ud 2.100% toray carbon ... 3.EN standard lightweight full carbon stem EN standard, carbon bicycle stem About ROSIT:Shenzhen Rosit industry co.,ltd is the ... .Our mainly products include :carbon fiber MTB frame, carbon mountain bike frame,carbon bicycle forks, ,bicycle rims,bicycle handlebars,saddles,etc All of our products ...