Shenzhen UMT Bearing Co.,Ltd1.More than 200 workers, 60,000m2 workshop area, 5 production lines2.ISO 9001:2000 certificated,3.Quality standard: P0, P6, P5, P4, ABEC-1, ABEC-3, ABEC-5,ABEC-74.Material:GCr15(AISI51200),Stainless steel,Ceramic,Carbon Steel5.All goods examined before deli
