For the damaged nickel mesh in production, as long as it is not cracked or broken from the pattern, it can be repaired and reused. The repair method is: if the nickel mesh is cracked from the bulkhead, but it is not broken, a piece of flower net can be cut. The inner coating is made of dull rubber (the epoxy resin and the curing agent are evenly mixed), and it is wrapped in the crack for one week. The glue overflowing on the outside should be cleaned up and can be used on the machine after baking.