... 4.5m Hole shape: square, slotted, diamond, hexagonal Plastic mesh for aquaculture Opening: 0.6mm-3mmThickness:1m-4.5mmColor:black, ... of metal wire. The material is plastic particles, you can check our material picture as below,It have the feature ... mechine, you can check our productive process as below picture,HEBEI MAISHI WIRE MESH MANUFACTUREPlastic mesh for aquaculture Plastic mesh for aquaculture