Ark Prefab Co. , Ltd. is a Shanghai-headquartered supplier of prefabricated buildings and a contractor for modular building construction.

Established in 2005 from its first Hong Kong subsidiary, ARK now operates across mainland China and Hong Kong. Its systems include flatpack units, ready boxes, bathroom pods and storage cabins, with applications in camps, offices, construction sites, power and water-treatment support, temporary facilities and larger modular accommodation projects.