Haider is just a localized vt-4 with some tweaks to turret, front hull and tracks, armor, gun, and ammo. Parts HIT quickly produced thanks to things they learned with AK series. Chinese aren't comfortable with license production and rightly so. It's their hot selling product why would they or anyone hand over critical info on that?
However, during AK development, they withheld critical drawings and blueprints of components repeatedly. We had to procure prototyping equipment like Fero Arm for quick prototyping and carve fresh blueprints of components. They play hardball and so do we whenever possible. Vt-4 is Norincos IPR however times we label it as local. It's funny actually.
We do fabricate quality turrets these days though, case in point AZ turret.