H811140-5ml | Standard for GC，>99.5%

H811144-4L | 农残级，≥98%(GC)

H811145-1L | 光谱纯，≥98%(GC)

H811147-2.5L | ≥99%(GC)

H811147-100ml | ≥99%(GC)

CCEM501785 | 99.1%

CCEM501785 | 99.1%

CCEM500355 | >95%

CCHM701660 | 99.9%

CCHM701612 | 98.2%