... 2859-1:1999,IDTGB/T 2828.1-2003Sampling procedures for inspection by attributea-Part1:Sampling schemes indexed by acceptance ... quality limit(AQL) for lot-by-lot inspectionISO 6826:1997,IDTGB 4556-2001Reciprocating internal ... Advanced oil alarm system insures the security and prevents accidents, recoil starter make it easy and reliable to start the engines, ...