ä½ å¥½ï¼ç¡
è¶æ¯è¿ä¸ç§ææéé¢æç¯ä¿çã
è¿ä¸ç§éé¢æ©¡è¶çå³éæ大ï¼æ¯æä¸å»ºè®®ä½¿ç¨çãå¨æ±½è½¦
é«æ¸©ç¯å¢ä¸ï¼æ©¡è¶äº§ççæ°ä½æ¯æ害çã
PVCææåæ¯å±äºä½æ¯çï¼ä»äºç¡
è¶åæ©¡è¶ä¹é´ï¼èä¸é«æ¸©æ
åµä¸ä¼å形软åï¼ä¸å¤ªæ¨èã
ç¡
è¶åæ¯æç¯ä¿çï¼å¯ä»¥éè¿é£å级æµè¯ã
å¸æå¯¹ä½ æ帮å©ï¼æé纳ï¼