A：Pretreatment tips in sunflower oil production process refers to a series of steps performed on oilseeds before they are fed into the oil extraction machine, including cleaning, dehulling, crushing, flaking, and cooking.

A：The costs that need to be considered to produce profitable sunflower oil includes raw material purchasing cost, machine investment cost, processing efficiency and energy consumption costs, Environmental protection and sustainable development costs.

A：This article will give you the guidance of starting a profitable sunflower oil production business, including understanding the market demand, sourcing quality sunflower seeds, setting up the production process, building partnerships, etc.

A：Starting a sunflower oil refining business requires several steps including conducting market research and planning, getting high-quality sunflower seeds, investing in sunflower oil refining equipment and so on.