Wanhai Medical, located in Changzhou City, Jiangsu Province, China, is a leading manufacturer of pen injectors in China, specializing in the development of pen injectors since its establishment. Wanhai Medical has two produc tion bases in Changzhou and one BD center in Shanghai, with a total of more than 300 employees. The company adopts a wide range of European and Japanese imported industry's top mold production and measurement equipment, injection molding equipment and experimental testing equipment to ensure high standards of product manufacturing and testing, for more than 180 well-known pharmaceutical companies to provide products and ancillary services, customers in more than 60 countries and regions around the world. Our products have been verified by long-term commercialization and batch production, with excellent performance, stability and reliability. Wanhai Medical is committed to the development and manufacture of high quality repetitive pen injectors, dispos able (prefilled) pen injectors and auto injectors. Our pen injector series products are ideal for insulin , GLP-1R like peptide (liraglutide, semaglutide,Tirzepatide , etc.) and other hormones, including growth hormone (HGH), follicle stimulating hormone (FSH), parathyroid hormone (PTH), and others.