Delaisi Ni and Hannuo doors and windows Delaisi Ni Hao. Delaisi Ni and Hano doors and windows are all specialized in system doors and windows. In comparison, Delaisi Ni is better, because Delaisi Ni was established on November 1th, 215, and Hano doors and windows were established in 221, with better qualifications and technology than Hano doors and windows, so Delaisi Ni is better.