Construction material Hole punching metal:Material: Galvanized Perforated, Aluminum sheet, Nickel Sheet, Copper sheet Tickness of plate: 0.1mm- 25mm Hole shape: Round, square ... Material, 2. The tickness of the plate 3. The hole shape 4. The hole size 5. Pitch ( the distance between two nearest ... ,ChinaTel:+86-318-7859077Fax :+86-318-7859177MP: +86-13451419174Skype:marywang800 Hole punching metal