bristles are bristles on the back of pigs. Because of its good toughness and strong adsorption, bristle has become a brush material for many daily necessities. In military industry, it is mainly used to paint warships, planes and various military vehicles, as well as to clean the barrels and barrels of machine guns and cannons. Therefore, it has become a strategic material.

in the national defense plan of the U.S. government at that time, bristles were at the same level as munitions, and they belonged to Class A important munitions. Even regard bristles as one of the important factors that determine the outcome of the war. To this end, the U.S. government even promulgated the M51 bristle restriction law, stipulating that bristles over 2 inches must be fully supplied to the military supplies of the navy, land and air force.

At the same time, China-India air route will be opened, and Chennault's 14th Air Force (Flying Tigers) will be responsible for transporting military supplies such as bristles. In view of the fact that the Soviet Union, Britain and other allied countries also need bristles, a bristle distribution agency was established in Washington, D.C., attended by representatives of the three countries.

during the anti-Japanese war, China was in urgent need of a large number of arms and foreign exchange, and traditional commodities such as bristles became important materials to compensate for the aid payment from the United States, Britain, the Soviet Union and other countries, which was called "barter to repay debts" in history.

In p>1937, China's bristle export income reached 27.92 million yuan. By 194, when the Anti-Japanese War was extremely difficult, China could still export about 3,5 tons of bristles every year, in exchange for more than 9,4 yuan of income, which helped China, which was bruised all over, to replenish blood during the Anti-Japanese War.

Extended information:

Because of its special material, bristles were used by many families to make bristles before the late Qing Dynasty. However, most of them were for their own use and were not taken out. However, with the advent of the industrial revolution, bristles have become the bristle materials of many daily necessities because of their good toughness and strong adsorption, and their value has suddenly increased.

during world war ii, the annual supply of bristles in the world was about 6, tons, of which China accounted for more than 75%. Among them, the United States has the largest demand. There are 4 or 5 brush factories in the United States, and even prisons in every state have their own brush factories. Almost all the raw materials used for making brushes come from China.

during the anti-Japanese war, the national government strengthened the management of bristle purchase, transportation and marketing. In September, 1939, the Executive Yuan approved and promulgated the "National Measures for the Unified Marketing of Bristles", which implemented the unified purchase and marketing. From 1938 to 1945, * * * bought more than 8, tons of bristles. In the spring of 1939, in view of the need for more vehicles in the Anti-Japanese War, Chiang Kai-shek even personally ordered the Southwest Transportation Office to buy bristles and Americans to change cars.

from p>1937 to 1945, bristles increased the foreign exchange income of the national government by 3 million dollars. Even during the Fourteen-year Anti-Japanese War, the China National Government signed a series of loan agreements with Britain and the United States, and obtained loans with a total value of $1.1 billion. The repayment method was also bristles.

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