Metal equilibrium theory by dressing production daily, reflecting the whole plant, plant (section), the work team, which can be compared and supervision, and to identify its cause. The actual metal balance can be reflected by the metal balance meter: the quantity of the finished product concentrate, the amount of metal, the recovery rate of the commercial concentrate, the quantity of the product, the stock of the concentrate and the mechanical loss during the process. Degradable Plastic Bag,Biodegradable Plastic Bag,Compost Packaging Bag,Degradable Bags Dongguan Sun Pak Packing Product Ltd. , https://www.dgsunpak.com