Rosin gasoline rust 50 grams of rosin, plus 50 grams of gasoline, mixing to become rosin oil. Apply this solution to rustless iron farm tools. After drying, it can prevent rust. Lime milk rust-proof lime, with a small amount of hydration open, add appropriate amount of water made of lime milk, the iron farm tools immersed in lime milk. Ammonium sulphate solution rust with ammonium sulfate 1 kg plus 20 kg of water, stir and dissolve, the rusted iron farm tools into which, according to the degree of rust soaked rust automatically fall off, rational rust stains wipe off with a cloth. Then rinse with water. Immerse in lime milk or coat with rosin gasoline to prevent rust. Divide vinegar and rust. Put rusted small farm implement spare parts into vinegar soak until the iron layer is easy to peel off. Take out the steel wire brush team rust and then put it in vinegar and dip for 2 to 3 minutes. Remove and wipe and dry it. . Congratulations on the use of scouring water in a small amount of scouring water, adding baking soda in a ratio of 1:500, mixing in farm implement parts. After a few days, the fermentation will bubble. A layer of rust appears on the surface of the water. Remove the parts and wipe them. China Agricultural Network Editor