Lanpai was the first to make impact rollers, and CMG later rose, and impact rollers were sold back to South Africa.

South Africa is the second largest economy in Africa, with a relatively stable economy compared to other African countries.

South Africa's finance, law, communication, energy, and transportation industries are relatively developed, with complete hardware infrastructure and stock trading markets. The production of gold and diamonds both ranks first in the world. Deep well mining and other technologies occupy a leading position in the world. South Africa has been identified as a medium-sized power in international affairs and maintains significant regional influence.

In 1953, South Africa applied for a relatively mature technological solution, which focused on the quadrilateral impact wheel. When the wheel rolled, the center of mass alternated up and down, and the angular parts rammed the ground in sequence. A bow shaped buffer elastic element is installed between the wheel axle and the frame to absorb vibration and ensure smooth traction. On the outside of the wheel, a detachable outer sleeve device can be installed, which can be turned into a circular roller according to needs, and is also conducive to smooth rolling for convenient transportation and transfer.

The Lanpai impact roller has officially entered the stage of engineering construction and application.

In 1995, after the completion of the impact compaction construction of Hong Kong's Red tentacle new airport, South African Blue Pie Company introduced equipment into mainland China, accounting for a large share of the construction volume related to airport construction in China.

In 2000, small batch production of products was launched into the market and welcomed by users. Afterwards, many factories in China began to trial produce and produce impact rollers. During this period, China Machinery Group began to accept commissions to produce some components of impact rollers. In the following years, it gradually began the research and development and production of impact rollers.

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