Japan also shouted the slogan "No.1 in the world", and mass production of nuts that never loosen has become the pride of Japanese industry. Because this kind of nut is really easy to use and the official advertisement in Japan is very good, many countries in the world have introduced this kind of nut in large quantities. Never loosen the nut, thus becoming the brand of the world.
However, some countries are not willing to just introduce and copy themselves, but they all end in failure. Because nuts that never loosen can't be played by ordinary countries, its production needs a strong domestic industrial base, and those countries can't compete with Japan at all, so it is difficult to succeed. After 1980, Japan became the second industrial power in the world. How do the industries of those imitation countries compare with those of Japan?
Japan has limited local resources, attaches great importance to industrial manufacturing and never wastes resources, so it tries its best to make nuts that will never loosen. They also know that this nut is difficult to make in other countries, so Japan even dares to publish its drawings and production instructions. At that time, Japan was full of self-confidence, and also shouted out the rhetoric that "even if the drawings are made public, no country will successfully produce them."
But Japan was so confident that they forgot that there were clever Chinese sons and daughters in the world, so China successfully hit Japan in the face with his strength, and later he made nuts more advanced than it. China quickly solved the mystery that the nut never loosens from the drawings: he used the carpenter's wedge principle and added many advanced technologies.
Objectively speaking, it is very clever for Japan to make such nuts by using the wedge principle, and the technology and design are impeccable. However, China was the ancestor of carpentry. You know, Master Mu Sheng Lu Ban became famous all over the world thousands of years ago. So after careful consideration, China successfully made a similar nut that never loosens.
Of course, we not only copied it, but also improved it, and later reduced its production cost a lot. Thanks to the drawings published in Japan, China has made an improved nut that will never loosen, saving the production cost.
It is more stable than the other side in function, and even provides technical reference for the construction of high-speed rail in China. Today, China's industrial GDP has successfully jumped to 1, making it the only powerful country with a complete industrial system. These are the results of the efforts of smart and hardworking Chinese sons and daughters.