Hi, I wanted to expand on some of the comments made by Mr. "Thorough Pro". I completely agree with his comments. Pakistan currently does not have the heavy industrial base to manufacture heavy manufacturing/industrial and/or high tech precision equipment. This makes it dependent on foreign suppliers, makes it sanction prone, and also chews up vital foreign exchange. Having this industrial base is useful not only for defense, but construction, the automotive sector, housing, power generation, etc.
I specifically remember reading an article back in 1997 on Dawn which covered the Agosta submarine project. Back then the PN was gearing up to assemble the second sub. I remember reading that the PN had imported equipment from France, Sweden and Switzerland. Moreover, all the special high strength steel for the assembled sub and the manufactured sub (Agosta # 3) had to be imported from France. Pakistan at that time could not produce this high strength steel. I hope Pakistan can also get this steel technology in house from China, if it does not currently have it.