Door plank material—High quality hot dip galvanized plates embossed

double by value="40" tcsc="0" unitname="mm" w:st="on">40mm

value="40" tcsc="0" unitname="mm" w:st="on">

2Door core material—polyurethane foam

3Speed—up and down speed by 20value="30" tcsc="0" unitname="cm" w:st="on">-30cm/s

4Open way—optional(remote control or manual control)

5Wind resistance—value="180" tcsc="0" unitname="kg" w:st="on">180kg/㎡

6Working temperature—-20~value="50" tcsc="0" unitname="℃" w:st="on">50℃

value="50" tcsc="0" unitname="℃" w:st="on">