document.write('
'); document.write(''); document.write('
Ethyl trans-2-butenoate, 反式-2-丁烯酸乙酯/100g/CAS:623-70-1'); document.write('¥230
BG-Z602440-BJ-P(四氟垫圈/适旋蒸转换头变径)'); document.write('¥6.4