The filter bag is used for the mushroom production, which solves the non-breathability of high-density Polyethylene with the channel of 2μm and prevents the microorganism spore of 5μm from polluting. The abundant oxygen in bag will increase the production in a large scale. Compared with the common bag, it optimizes the cultivation environment of hypha (sporocarp up to 20%), and saves much time in cultivation. 
    Our bag has common bag and breathable filter bag, PP bag and PE bag.
For the breathable Filter Bags,regular size as below show:
1)100*80*350mm, thickness 0.06mm        2)130*120*500mm,thickness 0.06mm
3)200*120*500mm,thickness 0.06mm      4)200*120*650mm,thickness 0.06mm
5)250*140*500mm,thickness 0.08mm       6)250*140*650mm,thickness 0.08mm
The Normal Filter size is 0.2 and 0.5 micron
For the common bags(works with ring and caps),regular size as:
For the PE no filter bag size:22*48cm,24*50cm,15*55cm.(filter cap has 5.0cm and 6.0 cm)
For the PP no filter bag size:15*35cm,17*35cm,17*33cm,18*35cm.(filter cap has 3.2cm and 3.8 cm)
Our bag is made of Polypropylene and can sterilize with 121c temperature.