If there's a few-millimeter discrepancy at the site, will the entire door be wasted?

Not at all. First, we clearly define size standards during the initial proposal phase. Most importantly, for such projects, we perform factory pre-assembly, integrating and testing the door leaf and frame as a whole before shipping to minimize onsite difficulty. If the site opening has changed (e.g., become larger), a simple adjustment to the opening will suffice. Through rigorous process forecasting and physical adjustment options, we ensure the door remains fully functional and safe under any circumstances, with zero risk of being wasted.