Correct use and protect the triangle is agricultural machinery operation progress power of the tractor, extended triangle and the use of the mechanical life, fall in capital operation, add the income the important way. What talents do proper use and protection of triangle? A good, correctly select type and number of the triangle.

The history of a triangle The history of a triangle Charlie & bull in 1911; Gates clarity in the world's first triangle, John & bull in 1917; Gates send clear the first in the world to cotton cord as a skeleton, with fabric reinforced rubber V belt, then make the gates company become the world's largest triangle production companies22。

The history of a triangle The history of a triangle Charlie & bull in 1911; Gates clarity in the world's first triangle, John & bull in 1917; Gates send clear the first in the world to cotton cord as a skeleton, with fabric reinforced rubber V belt, then make the gates company become the world's largest triangle production companies。