Long March 6 – China Great Wall Industry Corporation Family: Long March meters Length: 29 meters Diameter: 3.35 meters Launch Mass: 103 Low Earth Orbit Capacity: The Long March 6 was manufactured by China Great Wall Industry Corporation with the first launch on . Long March 6 has 4 successful launches and 0 failed launches with a total of 4 launches. Manufacturer China Great Wall Industry Corporation is a Commercial CHN entity that was founded in and is administered by . China Great Wall Industry Corporation has 4 successful launches and 0 failed launches with a total of 4 launches.