环烯烃共聚物的自然形态，类似玻璃。
COC has a transparency similar to glass in its natural form.
环烯烃共聚物也是一个防潮湿的，低吸水率的高透明聚合物。
COC also has a high moisture barrier for a clear polymer along with a low absorption rate.
环烯烃共聚物也是一个防潮湿的，低吸水率的高透明聚合物。
COC also has a high moisture barrier for a clear polymer along with a low absorption rate.
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