... Professional producer with 2 factories 3.Low B&PSilicon metal:Grade:553/441/421/3303/2502/2202Size:10-100mm ,90% ... than ten years.We can produce high purity of all grade Silicon Metal ,such as #553,#441,#421,#3303,#2202 ... resin, silicone oil. High-purity semiconductor manufacturing and polysilicon manufacturing. Specification: ITEM Name component Si content (%)impurity content(%) FeAlCaP1515>99.6 ...