Ethylene glycol 99%(光谱纯),99%,99.9(分析标准试剂),99%(分子筛、 Water≤50 ppm),AR,98%,Standard for GC,≥99.5%,90%,色谱级,≥99.7%(GC),电子MOS级,99 %( Water≤50 ppm),无水级,99.8%