タイトルまたは説明

It is mainly suitable for all kinds of casement windows as well as push-pull window. Important advantages: *- There is a front face adjustive device or an easily disassemble and assemble device on the right side of the yarn box. *- Inner adellimorphic bead type windproof device, can avoid eight degree wind. *- Using magnet to open and close. This using method has been applied for national patent, Please do not imitate, otherwise bring a lost.