Three new-generation BeiDou navigation satellites were launched last year, and 98 percent of the components were Chinese made.
BeiDou Navigation Satellite System has been in operation since 2000, making China the third country with an autonomous nav-sat system after the United States and Russia.
China Aerospace Science and Technology Corporation is the main contractor for the country's space program. It undertakes a number of missions, including the design and manufacturing of key components of BeiDou.
Zhang Chuxian is a technical director at the institute.
"First of all, the BeiDou Navigation Satellite System has high-level technology indicators and also requires high-standard components. We need t