The product is 99.99% high purity monocrystalline silicon block. The product is a perfect raw material for monocrystalline production. The product's electric conductivity strengthens as temperature rises, so it is a good semiconductor material and can be used to produce converter, transistor, diode, etc Silicon has the characteristics of small heat capacity, high mechanical strength, low thermal conductivity, non-combustible, non-, tasteless, cuttable, and convenient transportation. It can be widely used in thermal equipment and pipelines such as metallurgy, electric power, chemical industry, ships, etc Monocrystalline silicon is mainly used in solar cells. The application is silicon solar cells, which have high conversion efficiency and the most technology. They are mostly used in the aerospace field. The high purity silicon is a raw material for manufacturing semiconductor silicon devices, used to make high-power rectifiers, high-power transistors, diodes, switching devices, etc. 99.99% high purity monocrystalline silicon block with a metallic ,the crystal is hard and brittle,wear-resistant, good performance Metal elements semiconductor silicon has a conductivity lower than that of metal, and increases with temperature, and has semiconductor properties,electric conductivity strengthens as temperature rises, so it is a good semiconductor material Premium Silicon Block - High Purity Semiconductor Material for Monocrystalline Silicon Production - Industrial Grade Silicon Block for Applications Colour:As Shown Material:Metal Package Contents: 1 x Silicon Metal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.