M813382-5ml | Standard for GC，≥99%(GC)

M813384-5g | 分析对照品， ≥99.5%(GC)

M813385-100g | ≥99.5%(GC)

M813385-500g | ≥99.5%(GC)

M813386-100g | ≥99%(GC)

CCEM501785 | 99.1%

CCEM501785 | 99.1%

CCEM500355 | >95%

CCHM701660 | 99.9%

CCHM701612 | 98.2%