@TAC @Yasser76 @That_Guy
There are detailed legal provisions on China's arms exports, and you can consult the relevant laws, which are all public documents.
Let me make some brief explanations:
The classification levels of China's weapons information are roughly differentiated as follows:
1. Top secret. They are developed and directly controlled by the military's direct scientific research organizations.
2. Classified. They are developed by scientific research institutes of military industrial enterprises. But, the departments holding these secrets are managed by military representatives assigned by the PLA.
3, Secret. They are developed and directly controlled by the scientific research organizations of the military industrial enterprises. In accordance with the secrecy law, they are secured by the internal security departments of the military industrial enterprises.
In the export of weapons systems.
The top secret part is absolutely forbidden to export
The classified part is decided by the PLA whether it can be exported or not
The secret parts are exported at the discretion of the military industrial enterprises.
For example: combat command systems
1. The encryption and communication command module, which is identical to the PLA, is top secret. They are removed from the export system and replaced with modules that can be exported.
2, Command links and information nodes in the system, are classified. They can be exported with PLA approval. However, their manufacturing technology and core code cannot be exported.
3, The related combat units can be exported at will. However, their communication links with the combat command system and related information node modules will be removed or replaced.
It is true that Pakistan has a lot of special status in Sino-Pakistani military trade cooperation, but they remain within Chinese law.
For example: KLJ-7A radar
It was first publicly unveiled at the 2016 Zhuhai Airshow. However, Pakistan approached this radar at a very early stage.
The following is a compilation of memories recorded by engineers at the 14th Research Institute of CETC:
2003. Early work on research related to this radar began to start
2008. Hotel bombings take place in Islamabad. At that time, the Chinese engineers were working on test flights at a base in Pakistan and were not staying in the hotel.
2009. A team of engineers from the 14th Research Institute was stationed in a Pakistani factory to officially carry out the batch co-production of this radar in Pakistan.
2011. Osama bin Laden was killed and Taliban forces threatened to retaliate. As the Taliban base is not far from the factory, the Chinese engineer team was closed in the factory for three months for safety.
From this information we can see that Pakistan had already started mass production of the KLJ-7A radar when others knew about it. This is the special position of Pakistan.
But, everything is based on Chinese law.
When Pakistan procures Chinese weapons, the specific choices are made by the Pakistani military based on its own circumstances. There is no such thing as downgrading or reducing the configuration of the weapon systems they use with the PLA's own.
The 054AP is more capable than the 054A and of course more expensive.
The VT-4 is a foreign trade enhanced version of the 99A. The Chinese military industrial enterprises can further enhance the VT-4 if the customer is willing to spend more money.
But the top secret parts inside these weapon systems are not exported.