... , Shandong Province, there are more than 150 workers in our factory, We have advanced production equipment,month output about 200000pcs .2 ... roller bearing.3.The material is bearing steel(GCr15),however,we can accept your requirement,for example:stainless steel,carbon steel.4 ... big wooden case.the small bearing put in tube is reasonable.5.We accept small order and processing customized,you just sent ...