What is the proportion of material cost to total production cost for home brew beer keg ?

The production cost consists of direct material cost, labour cost and manufacturing facility cost. Normally, the material cost takes up about thirty to forty percent of the total production cost. The figure may vary depending on the specific products, while in order to produce high quality home brew beer keg , we never cut down the investment on the material due to corporate parsimony. Besides, we would invest more in the technology introduction and product innovation to improve manufacturing efficiency and lower the overall manufacturing cost.