Selling price = raw material cost+gross profit.

Selling price = raw material cost *( 1+ addition rate)

Selling price = raw material cost+bonus.

Markup rate = gross profit margin /( 1- gross profit margin)

Gross profit margin = addition rate /( 1+ addition rate)

Raw material value = wool value-returned quantity * unit price+waste quantity * unit price)

Quantity of cleaning materials = quantity of raw materials-quantity of secondary materials-quantity of waste materials.

Net material unit price = net material value/net material quantity

Cost price = purchase price/(product output * breeding scale (quantity))

Gross profit margin = (selling price-raw material cost)/selling price * 100%