At the beginning of 2022, we received an inquiry for this production line from North Africa. With the deepening of communication, we realized that this is a real customer, but the lack of production experience. The customer has no production experience at all, but give us full trust, which is a lot of pressure on us. We designed the production line according to the original plant structure, reformed public facilities such as water and electricity, provided production formula and operating conditions according to the application of casing in the local market, selected raw materials, configured laboratory testing instruments, sent engineers and technicians to provide on-site installation guidance and training, and took charge of the early production and operation until local workers were skilled in operation. This project can be called a turnkey project, and it is also the first casings production line in the North African market.