è¿éé¤äºç¥æå±é«æå¤ï¼è¿éè¦æ确管éæ¯é¸éè¿æ¯ppr管ï¼å¦å¤ç¨æ°´éè¦æ±æ¯å¤å°ï¼è¿å 个å ç´ é½å°å³å®æéæ©çå¢åæ³µæ¯å¤å¤§åççãä¸è¬è¿æ ·çæ³µåçå¨4kw以ä¸çæ¯è¾å¤ï¼å ·ä½éåå¯å¨è¯¢èå·èªå¨åã