Compatibility studies include the analysis of extractables under controlled, tightened laboratory conditions and the analysis of leachables under actual conditions of use. In recent years, as the laws and guidelines of domestic and foreign regulatory agencies have become more and more perfect, the compatibility study between drug products and packaging systems of high-risk preparations, such as injections, oral-nasal inhalers and other dosage forms, has become a key direction of regulatory attention. The rapid advancement of biopharmaceuticals in China has made the compatibility study of disposable systems/components imminent. NG28 Sinotest provides compatibility studies of pharmaceutical packaging materials, compatibility studies of biopharmaceutical disposable systems (SUS) and material characterization services for medical devices.