If you can not find the cause of the oil quality problems lie, if you need to do quality assessment of the oil, the oil change indicator testing, please contact the Shenzhen market universal Technology Co., Ltd. Our company has a professional oil detection and analysis technical team, according to GB / T, ASTM, TP, ISO, UOP, JIS, EN, SH / T and other standards, provide you with professional oil detection and analysis services. Cetane index is a calculated value of the properties of the diesel combustion in the engine, this value is the standard density of diesel and 50% distillation temperature calculated by the formula derived from, is the theoretical value, generally in the absence of cetane machine When using a standard test. Generally with GB / T11139, ASTM D-976 or ASTM D-4737 or ISO - 4264 were determined. General cetane diesel about 38 and 55, biodiesel can be up to 62. Cetane diesel multi-national standards are not the same. Chinese national standard conventional diesel cetane number is not less than 45, usually between 45-50, rarely exceeding 52. Please contact us to determine the sample prior to testing conditions and testing requirements and other details of testing and counseling. Contact: Miss Xu Tel: 0755-25844177, 18028719372 send samples Address: Futian District, Shenzhen nosy four 22 Hua Sheng Building 406.