1, technology transfer is not free. Take the Xiaolong fighter as an example. Pakistan is a major shareholder who has spent money. As far as tanks are concerned, China has no obligation to provide them to Pakistan Railway for free. In addition, Pakistan Railway's Khalid tank can fully meet the existing requirements and does not need to spend any more money.

2. It is convenient for Pakistan to purchase equipment internationally. Relatively speaking, Ukrainian engine technology is better than that of China. Moreover, Ukrainian engines are cheaper than those in Europe and America, slightly higher than those in China, and the cost performance is still there.

3. Pakistan says it is self-produced, but in fact it mainly focuses on assembly and maintenance. All parts are purely imported.

4. The self-reliance of the Pakistani Railway has certain benefits for China, first of all, it can not be separated from the technical support and follow-up services of China. Our aid construction is profitable, not for nothing but for the other party to spend money!