¤j«¬¦Û¦æ¤p¨®¾T¦Xª÷y¹D M-670-1¦Û«¡G13.5kg/m ³æ®Ú¥i©Ó«¡G450kg ¾T¦Xª÷µP¸¹¡G6005/T ªí±³B²z¡G»È¦â®ñ¤Æ½¤