牙科橡皮圈 LTRA-CHAIN LTRA-CHAIN ◆Long OLong c∈ OShort OClosed OShort 1S09002 CE ●Closed Made in USA IS09002 Made in USA Long stone Drive Cherty HILLNOR O15FT O7.5FT Distributed by DZ Americ O15FT VLL.NJ08003.USA O7.5FT American 正 nDrive Cherty 长距 中距 短距