"Major country industry"

A small country: Mr. Qin, we want to import a batch of steel pipes and gas cylinders! Qin Feng: Sure. The manual has a structural diagram that strictly prohibits welding the two together! Customer: Mr. Qin, we are in need of purchasing a batch of fire compression cannons! Qin Feng: Sure. The instruction manual strictly prohibits replacing the carbon dioxide hollow bomb with aluminothermic agent! Subordinate: Mr. Qin, the Minsk has been bought back! Qin Feng: Alright, let's carry out the modification as planned. We'll install various types of drones on it. Our mission is to observe the weather, hydrology, fish populations, etc. We'll modify it into a Marine scientific research vessel! This book is also known as "Sorry, We Really Only Produce Civilian Products!"