Features:
The company is known as the Queen of the harem of a product, the performance advantages of its prominent position.
Enterprise fan thick 2.0mm, width 140mm, structure solid and reliable, lower pulley adjustable up and down, a simple lifting handle design and import pulley configuration enables the doors sliding switch high loads more portable.
Single fan bearing 400kg or more, using 5mm + 27A + 5mm hollow double steel-ray, built Seoul, Korea lion electric blinds, air tightness reach a peak.

Features:
Multi fan big fan open design, known as the "harem concubine" moveable wall.
Single-leaf metal bearing up to 400Kg; accessible through the use of,
When locked state to enhance the design can still achieve micro ventilation
Simple operation, high quality imported hardware smooth no noise when the switch
For the balcony door, the sun door, the living room door, patio door patio doors.