加德士Valor 300 10W 20 30 40 50柴油机油 Caltex Valor 300 10W 20 30 40 50是单级、重型柴油发动机润滑油。加德士Valor 300 30柴油机油 Caltex Valor 300 30特别适用于要求采用API CD 级润滑油润滑的涡轮增压式及自然吸气式的柴油发动机。加德士Valor 300 40柴油机油 Caltex Valor 300 40特别适于对反应敏感的...
The other extracted value-added products were characterized in accordance with El-Gendy et al. (2023). Using the KBr disc approach, the Fourier transform infrared (FTIR, Perkin Elmer Spectrum One, Waltham, MA, USA) was used to determine the characteristic functional groups of value-added product...