... ,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 ... of return idler rollers have been exported to more than 30 countries all over the world in past 34 years and we have ...