The anti-drop nut was invented in Japan at the very beginning. For a long time, a Japanese company monopolized more than 45% of the world's anti-drop nut. The market share of high-end nuts in the market reached 80%. China's high-speed rail business started in ten. A few years ago, China did import a large number of anti-drop nuts from Japan for the construction of high-speed railway tracks. They are still installed on China's high-speed railway tracks and have become the origin of these rumors on the Internet, but now the situation has changed. Japan's monopoly in the field of anti-drop nuts has been broken by China.

In fact, China has also realized the danger of anti-drop nut being controlled by people very early, so it began to organize domestic companies to develop their own products, and relying on strong manufacturing strength and scientific and technological capabilities, Chinese companies successfully developed domestic products in only two years. The performance of the anti-dropping nut is comparable to that of Japan. It is also stronger than Japan in the key performance of anti-dropping ability. And relying on China's complete industrial chain, its cost is significantly lower than that of Japanese nuts. Once The market had a considerable impact on Japanese nuts. After the successful research and development of domestic products, a large number of domestic companies began to purchase domestic nuts. Japanese companies were forced to drastically reduce the prices of their products to compete with Chinese domestic nuts.