... ,AS,JIS Certificate: CE, ISO, BV, SGS, IKA, ETCStandard of the return idler can meet: GB, ISO, CEMA, DIN, JIS, ETCAdvantage of ... the return idler:The life time: more than 30000 hoursSamples for testing are available ... .The more relaxed payment terms This type of return idler rollers have been exported to ...