2) Confidentiality agreement can be signed
3) Seven days refund guarantee
More important: we can provide not only product, but technology solution service!
1.Name: Silicon powder2.Purity: 99.9% min3.Appearance: gray powder4.Particle size: 30nm, 50nm, 100nm, 325mesh, etc5. Cas No: 7440-21-36. Testing report: ICP, PSD, SEM, XRD available