123 | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z
non-asbestos braided packing无石棉编织盘根
non-asbestos sheet无石棉板
non-stick coating抗粘涂层
notched flange带槽凸缘