Heliono’s RF window can also be used as a skylight, clearstory window, or observation window.

合力电磁的屏蔽窗还可以用作采光窗、天窗和观察窗。

The outer door is a polyurethane foamy one with a glazing unit observation window, for better perspectivity and heat preservation.

外门为聚氨脂发泡门，中空玻璃观察窗，透视性好，保温性能好。