- This diamond wire mesh can fight against mosquitoes and burglars and soft-closing can minimize the accidents.

- Adopt Hollow Low-E Glass and German accessories, while each accessory is tested to 100,000 plus cycles.

- Adopt EPDM top sealing strips, which have good performance on air tightness and sound insulation .

- These glass can be upgraded with laminated hollow glass, with built-in manual/automatic blinds, or self-cleaning etc.