The performance of stainless steel handles varies depending on the scope of use, but usually consider the following:
Strength: Whether he has sufficient tolerance in the selection of the handle of the electric box;
Air tightness: Whether the inner and outer frame structures of doors and windows are tight on the door and window structure.
Whether the aluminum alloy outdoor window is tight and airtight;
Water tightness: whether there is water accumulation or leakage; sound insulation: depending on the insulating glass
Sound insulation and other special sound insulation strip structure and opening and closing force,
Activity: Pay attention to whether the stainless steel handle can be bent at 90 degrees and whether there is resistance when bending.