Daily necessities industry and hardware industry, including lighters, toys, locks, door hinges, fitness equipment, mattresses, sofas, etc. In terms of quantity, the demand for springs is the greatest.

Step 2: rubber band

It is a short ring made of rubber and latex, which is usually used to tie things together. It was invented by Stephen Perry in March 1845.

Step 3 trampoline

This is a competitive sport, in which athletes demonstrate acrobatic skills by bouncing off the trampoline. As a kind of gymnastics, trampoline is called "air ballet". Trampoline was listed as an official event in the 27th Sydney Olympic Games in 2000.

Extended data:

Although the spring industry is a small industry in the whole manufacturing industry, its role cannot be underestimated. The country's industrial manufacturing industry and automobile industry should be accelerated, and the spring industry, as one of the basic components, needs an ultra-early development to adapt to the rapid development of the whole country's industry.

In addition, the expansion of the scale and variety of spring products and the improvement of the quality level are also the needs of upgrading mechanical equipment and improving the performance of supporting hosts. Therefore, spring products play an important role in the industrial development of the whole country. Daily necessities industry and hardware industry, including lighters, toys, locks, door hinges, fitness equipment, mattresses, sofas, etc. In terms of quantity, the demand for springs is the greatest.

Baidu encyclopedia-spring

Baidu encyclopedia-rubber band

Baidu encyclopedia-trampoline