When a very large product that is hard to move is produced a what is used?

When a very large product that is difficult to move is produced, a method called "in-situ production" is often used. This approach involves manufacturing the product on-site or close to its final location to minimize transportation challenges. Techniques such as modular construction or assembly in place may also be employed to facilitate the process. Additionally, specialized equipment or cranes may be utilized to aid in the assembly or installation of the large product.