What Rocket Am I?: Quiz 11

Clue 1: I launched the Dong Fang Hong 1 satellite.
Clue 2: I am a three-stage rocket with solid upper stage.
Clue 3: I stand 32 meters tall.
Clue 4: I was first launched in 1970.
Clue 5: My payload to low Earth orbit is 300 kg.
Clue 6: I was developed by CALT.
Clue 7: I am China's first orbital launch vehicle.

Yes, I am Long March 1.

I played "The East is Red" from orbit, announcing China's space entry.