Foldable cubic liquid storage bag/3D liquid storage bag is a product specially developed for liquid storage and transfer in the biopharmaceutical environment. The bags are available from 50 L to 3000 L and can be customized according to customers’ requirements. The DuoFilm-001 film used in these bags is 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 foldable cubic liquid storage bag/3D liquid storage bag fully complies with cGMP and biopharmaceutical operation requirements in terms of raw materials, product assembly, and sterilization processes.