▼Matters Needing Attention：
1 Applicable to inner opening and inner inverted window series;
2.Quick installation design: no need to mill or punch holes, quick and convenient installation;
3.With positioning auxiliary parts, greatly improve the installation efficiency and accuracy;
4 Adjustable upper and lower hinges: adjust window sash clearance to ensure accurate installation;
5 Adjustable pin and corner parts:Adjust the transmission distance, eliminate the transmission rod length error;
6.Hinge standard bearing capacity up to 80kg;
7.It still works normally after 35,000 open and close cycles;
8.The tensile strength of the transmission rod is more than 3,000N
