This platform develops transdermal dosage forms such as patches, patches, ointments, and liniments, and conducts dosage form and material selection, preparation process optimization, preparation equipment design, and product quality research, including transdermal calculations and in vivo clinical trials. Research to formulate modularized formula selection (matrix includes polymer materials, functional excipients, APIs, etc.), engineering process selection, and standardized quality research (especially drug release characteristics, adhesion characteristics, and rheological characteristics that are different from ordinary dosage forms , research on microscopic properties), development and serialization and other characteristics. The company's products under development include tuloterol patch, loxoprofen sodium transdermal patch, loxoprofen sodium gel patch, flurbiprofen gel patch, lidocaine gel patch, etc.