Nanjing Daoloon Biotechnology Co., Ltd. is a professional manufacturer of sanitary diaphragm discs. Daoloon diaphragms are made with imported PTFE and TFM materials and additives, meeting FDA inspection standards and suitable for sterile process applications in the biopharmaceutical and pharmaceutical industries. They are particularly well-suited for online cleaning (CIP) and sterilization (SIP). We offer hundreds of different specifications and styles for selection, compatible with most mainstream brands of diaphragm valves worldwide. For special requirements, we provide professional customization services.