长征火箭是中国在国际市场上知名度很高的高科技产品。它的家族成员有:长征一号、长征二号、长征二号丙、长征二号丙改进型、长征二号丁、长征二号戊、长征二号己、长征三号、长征三号甲、长征三号乙、长征四号、长征四号乙共12种型号。 Long March Rockets is a high-profile Chinese high-tech product on the international market. Its family members are: the Long March, the Long March two, the Long March two C, the Long March two C improvement, the Long March two Ding, the Long March two E, the Long March two, the Long March three, the Long March three A, Long March III B, Long March IV, Long March IV B total of 12 models.