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Over these years, market trend and government regulation have lead to the introduction of halogen free material. As CCL supplier, we consider that the benefit of halogen free resin not only for environmental consideration but also enhance some particular characteristics for specific PCB application. We have developed a novel halogen free material. Except excellent thermal performance, we also develop...
The effect of variable zone length on the separation efficiency in zone refining processes was investigated theoretically. During zone refining operation, properly adjusting the zone length along the ingot influences the solute concentration in the liquid zone, leading to an enhancement of the extent of separation. For multipass operations, considerable improvement in separation is obtained by adjusting...
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