Development of Long March Vehicle Family

<正> In 1970,China launched its firstindigenous satellite with a LongMarch-1 vehicle.Since then,vari-ous kinds of 38 satellites have beensuccessfully sent into space withLong March vehicles.LM vehiclesbegan to enter into internationalmarket in 1987 and 1988 whenpiggyback services were providedwith LM-2C vehicles to Matra anda German client.On April 7,1990,Asiasat-1,a US-made satel-lite,was sent into orbit on a LM-3.In July that year,the LM-2E,astrap-on rocket,made its maiden