（1）Special tips： There must be slight scratches during wafer Transportation I can't see it if I don't look carefully，Wafer pattern types, random delivery
Fragile
The original material of wafer is silicon，And the surface of the Earth's crust has inexhaustible silica dioxide。Silica gel ore is refined by electric arc furnace，Hydrochloric acid chloride，And the method after distillation，Made of high purity polycrystalline silicon，The purity of up99.999999999%。Wafer manufacturers will melt this polycrystalline silicon again，Seed crystal is planted in the solution，Then pull it out slowly，To form cylindrical-shaped monstrone crystal rod，Since the silicon crystal rod is gradually generated in the molten silicon raw material by the seed crystal determined by the orientation of a crystal plane，This process is referred to“Crystal growth”。Silicon Crystal Rod goes through sectioning，Roll Mill，Slice，Chamfer，Polishing，Laser etching，After packaging，It becomes the base stock of integrated circuit factory——Silicon wafers，This is“Wafer”。
Finished silicon wafer manufactured by chip，After cutting is nothing moreICThe！
Due to the manufacturing process precision，Factory confidentiality measures to improve。Complete silicon wafer is rarely seen on the market，I am lucky to bring a small amount for sale，Cheap price。
Suitable as an ornament，Or electronics store counters lay-out，Quite fancy，To relatives and friends have a face，BLattice high！
It is also suitable for science and technology schools to make teaching materials for students Quite shocked
