As we know Samsung scx4200 chip have a big demand in the world.. and now there are many chip suppliers take this product as their focal point, so are we.. but our chip are different from others.. look our scx4200. we have two kinds. one is the circuit on both side of chip. and another kind is only have circuit on the single side. the difference the formmer's quality is more stable and the later's. so do you understand?
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