Automatic aluminum folding doors exterior bifold door on China WDMA Sliding Window good sound insulation and high

good sound insulation and high safety

casement door/hinged door for sale

√ Rust and Corrosion Free

CNC machining center

pneumatic drive

Automatic aluminum folding doors exterior bifold door on China WDMA Sliding Window good sound insulation and highFolding door Automatic aluminum folding doors exterior bifold door Product Description: Product name industrial accordion doors with locks material specifications: Door frame: 50mm*80mm aluminum alloy special tube Door leaf: Use built in galvanized steel plate and concavo convex groove design, the panel adopts 0. 8mm steel plate (can be sprayed) Track: 50*50*3mm steel track, built in ultra high molecular insulation board, sealed with tri propylene