70 Flat Open Three-Seal Series

The main seclion bar with a six-cavity structure has good therml-insulating and energy-saving effects，which is one of the most high-end section bar systems in the current market.

It applies independent drainage cavity design to inprove the drainage performance of finished windows.

It can be designed into in-swinging casement windows，inward tilt-turn windows，fixed windows，etc.

Through connection materials，it can form connection in any angle.

It can be equipped with three-layer and double-layer hollow glass at large intervals.

With simple，utility and highly operable technologies，it is suitable for industrial production.

4-level air tightness，3-level water tightness，4-level wind pressure resistance and 8-level thermal insulation.