Pharmaceutical PackagingChina 20mm Grey Chlorobutyl & Bromobutyl Pharmaceutical Laminated Lyophilized Freeze-Dried Rubber Stopper for Injection Glass Vials & Bottles, Find details about China Pharmaceutical Packaging, 13mm Rubber Stopper from 20mm Grey Chlorobutyl & Bromobutyl Pharmaceutical Laminated Lyophilized Freeze-Dried Rubber Stopper for Injection Glass Vials & Bottles