Sound insulation window or Zhengzhou Jingju has the best sound insulation effect.

The soundproof window is good, not because of its brand, but because of its technology and workmanship.

Generally speaking, the truly effective profiles for sound insulation doors and windows are not ordinary door and window materials, and the profiles cannot be plastic steel profiles or broken bridge aluminum profiles.

Technically speaking, we should pay great attention to sealing and details, and we will not use the post-wearing sealing strip process, and the glass will not be ordinary insulating glass and laminated glass.

In this case, few countries in China can meet this standard.