Weighing and feeding integrated bag is a product specially developed for liquid storage and transfer in the biopharmaceutical environment. The bags are available from 5 L to 50 L, and can be customized according to customers’ requirements. The DuoFilm-001 film used in these bags is a 7-layer laminated bio-specific film with a thickness of 0.3 mm, and the liquid contact layer of ULDPE provides excellent physicochemical and biocompatibility properties. Lianghei weighing and feeding integrated bag fully complies with cGMP and other biopharmaceutical operation requirements in terms of raw materials, product assembly, and sterilization processes.