No, Chandrayaan-3 is not fully made in India. The payload module, which houses the scientific instruments, was provided by NASA, and the scientific instruments themselves were developed by a consortium of Indian and international scientists. However, the rest of the spacecraft, including the lander, the rover, and the propulsion module, were all made in India.
The decision to use some foreign-made components on Chandrayaan-3 was a strategic one. It was a way for ISRO to collaborate with other space agencies and gain access to cutting-edge technology. It was also a way to reduce the cost of the mission, as ISRO was able to negotiate favorable prices with foreign suppliers.
Despite the use of some foreign-made components, Chandrayaan-3 is still a major milestone for India's space program. It is the first Indian mission to attempt a soft landing on the lunar south pole, and it is a significant step forward in India's efforts to become a leading spacefaring nation.
Note - It is important to note that space missions often involve collaborations with international partners for various components and technologies. However, it is advisable to refer to official statements or announcements from ISRO or reliable sources to make informed decisions. When it comes to being "fully made in India," it's not accurate to use that description if any component of the project is designed or supplied by other countries. Instead, we can accurately state that the project is "made or launched by India."