December launch - banned missile test its neighbors accused - successfully put north Korea's first man-made earth satellite in space.
International sanctions, north Korea to introduce advanced foreign technology.
Reporters said, found no foreign help, it can produce "most" part will be a concern of the.
North Korea said, the rockets a communication satellite into space, but the United States and north Korea's neighbors have been think, so that the operation, Pyongyang is trying to develop a long-range missile.
South Korean military and aerospace experts fishing, the rockets 10 pieces into the sea, because it off, including its primary engine, the fuel and antioxidant box.
, South Korea's defense ministry said in its report: "is considered to be north Korea's most of the component itself, although it USES merchant products imported from abroad.
In the south Korean capital, Seoul, the BBC's Lucy Williamson says, it will be unwelcome news, many countries, because they think that such technology ability is military application.
The rocket in the technology could reach the United States intercontinental ballistic missile, she added.
In December 2011 JinZhengEn since stage, north Korea has conducted two long-range rocket launch. April failure to launch, but 12 months to try, it's a significant success.
The United States, Japan and South Korea are seeking response of the security council, banning north Korean missile tests nuclear test, in 2006 and 2009.
One of South Korea diplomat said, a more severe sanctions resolution, and calls for the United Nations distribution, to bring my ticket in the security council on Tuesday or Wednesday, is expected to South Korea's yonhap news agency reported.



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