Because if the Tank 500 uses ZF on a large scale, then most of the profits from the Great Wall 500 will be given to the German company ZF.
Tank 500 directly touches the high-profit luxury car profit market of Wrangler, Toyota Land Cruiser, Nissan Patrol, BMW X5, Audi Q7, and Mercedes-Benz GLE. If you buy a ZF vertical 8AT high-performance Even if someone is willing to sell a good torque-carrying gearbox, most of the profits from the Great Wall Tank 500 must be handed over to Germany's ZF. If someone is unwilling to sell it, or is unhappy due to "external pressure" and cuts off the supply, How did Tank 500 end? Replace the gearbox midway or discontinue production and sales? This is a fatal blow to car companies.