прочный велосипед стальной шарик

bicycle steel ball: the basic information of the goods: 1,the quantity:wholesale 2,the quality:superb 3,the price;reasonable 4,the use:suit to kinds of bike the simple introduction of the company: Tianzheng bicycle CO.,LTD is a main manufacturer for kinds of bike parts and the children bicycle . We always adhere to the priciple of mutual benefit and be responsible to every customer. If you have interest in our goods ,please contact us and we will give you the detailed you are interested in .