... use 2,ISO9001:2000, 3,Competitive price 4,Good service Deep Groove Ball Bearinghigh precisionlow noise less vibrationISO9001:2000 good service1Product ... at sightB:30% T/T in advance, 70% against copy of B/L12 Service OEM or WOKOST13 Delivery periodAbout 30days after ... , a basic type of deep groove ball bearing consist of one outer, a group of steel ball and a group of cage ,deep groove ball bearing ...