We want the following metal powder. Application: Magnetic metal paint--- Paint be applied to paper or film, and the dried surface. And then adhere well to the magnet like an iron plate. A. 1. We will make water-based paint. Therefore, when contacting water, the metal powder should not occur oxidized and rust. 2. Metal powder particle size: 5-10 μm (D90) 3. Purity is not important. Purity of less than 90% is good, too --- It just needs to stick well to the magnet. 4. The price should be cheap. 5. Please give me quotation about sample 2kg & 1TON price each.​ ​​B. If you have Iron sponge metal powder, give me SPEC and price.