Definition
Delivered to consumer works, China
Quality
Conforming to GB/T 25074—2017, Donor impurity concentration 0.3ppba max, Acceptor impurity concentration 0.05ppba max, Carbon concentration 0.4ppma max, Fe, Cr, Ni, Cu, Zn, NaBulk metal impurity concentration 0.5ppbw max, Fe, Cr, Ni, Cu, Zn, Al, K, Na, Ti, Mo, W, CoSurface metal impurity concentration 1.0ppbw max, Size of Broken Polysilicon: 80mm-150mm, Particle-induced Pit Depth: 7nm max