Animals have all kinds of abilities, such as endurance, strength, flexibility and tenacity that human beings do not have. When using machines for production and construction, human beings have more or less learned from the advantages of animals, so that production machinery can adapt to different environments and transform the environment.

Henglida dry and oil chain, from the material, melting, cooling, quenching, shaping, quenching and tempering, forming and scene test, after several times of tempering and forging, after arduous tests, finally become a big tool. With the pure "chain", the construction machinery can be endowed with the life force of the Beast - the vitality of the chain, that is, the more spiritual productivity.