????:1?????:?????

2????????????

3?????

4?????????

5???????????

??8???12? (?????? ??)“???,???????????????????,?50???”12????????,??????

???????????,??23.6???,?????118.7%? ?? ??

??,??????????????PVC?????????“???????????????”????????????????????,????????????“?????”????,????,?“????”??????

???????????,???????,?23.6??,???118.7%;??37.65???;?100%?

“???????????,???????????????????,??????????????????????????????????,??????”???????

????????,????,???????????,??,???“??????????????”???????,??????????“???”??????????????,?“??????????????????????????”??????????,??“???????????”“?”??????????

?????,?,??“????”?????????????????????,???????????“???????”?? ??? ??

??????,????“?????”???,??????????“??”??,?????????????;????????????????“?”??????,???95%????????????????

???,????????????????D????????????????????,???????????????????,????????????,???(???????)

?????:??????????