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            ?????????2011-08-08 09:42 ?????????

            ?????? ??????????????ó????????????????????????н???????????????????????????豸?????????Ч???...

            ??1984?????????????????????????????????????????????????????ó????????????????????????н???????????????????????????豸?????????Ч???????????????豸????Ч?????????1-1.5??????20um??????????????????????β??????????60%?????β??????????顣????????????????????1.7g/T??????л?ú???120??/??????
                ??????豸?????о???У????????????????????????????????????????????????????????????????н????????????????Ч??????????10um??????????
                ?????л?е???????????????????????7?????????????????д????????????????????????????????????С?????????????????50mm??????????з??????????????????????????и?Ч??????????????????????????????????????????????????????????????????????????????????????????????????豸??????????????????????????????????????????????????????????????????????????
                ??????????????????飬????????20????????????????????????Ч?????????????????????????????????????豸???????????????????????????????????????0371-64588838?????????????????????????????????????

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