Can Haojue dl 150 front gear be installed on nk 150?

No, because the models don't match.

Haojue dl 150 is a product developed by Haojue Company, equipped with 149cc air-cooled, four-stroke and single-cylinder engine.

KA 150 adopts a high-rigidity rhombic frame, and strengthens a square cradle to improve rigidity and stability, which makes it more stable at high speed and more accurate in bending. Split seat design, the seat height is only 760mm, even a petite rider can still land easily. Full LCD dashboard, night reading is still clear. Patented anti-pick central lock effectively prevents vehicles from being stolen.