After soaking and bursting the feathers of waterfowl such as ducks and geese, due to the large amount of residual fluff, they need to be treated with wax soaking, cold wax, and dewaxing. After dewaxing, the feather purity rate of ducks and geese can reach over 95%. Production lines with a capacity of over 3000 birds/hour usually use mechanical waxing, while production lines with a capacity of less than 3000 birds/hour usually use manual waxing.