In the field of industrial machinery, measures are required to maintain stable operation even under harsh environments—such as safety countermeasures, dust- and water-proofing, and ensuring durability. Especially, appropriate solutions are essential for each piece of equipment: protecting drive and rotating parts, improving the maintainability of conveying and washing equipment, and securing the durability of water tanks and vibration-proof facilities. Leveraging the storage, expandability, and portability characteristics of bellows, NABELL provides covers that combine optimal materials and structures according to the application. We cater to a wide range of needs—from protecting ducts and flexible joints to special uses equipped with UV and electromagnetic shielding functions. We propose covers that balance cost and functionality, achieving longer equipment lifespans and reducing maintenance burdens.