The shoulder pole（bian-dan） is the earliest construction machinery of the Chinese nation, which has been used up to now and witnessed the hardships and responsibilities of countless ancestors. In 2020, a group of Chinese engineers learned from international product experience and developed an Smart Crusher machine to replace people working in dangerous, high temperature, high dust pollution, narrow and heavy environment. Motor driven hydraulic operation is adopted, and all functions can be implemented through remote control operation. Therefore, it is also called a demolition robot.

The b-d trademark comes from the first als of the ancient Chinese pinyin（shoulder pole，bian-dan）, that is, b-d, taking the meaning of taking on the heavy responsibility fearlessly. It is hoped that the Smart Crusher machine can be operated by remote control, so that the workers can work with dignity and the owners can have good profit returns.

The control system of the Smart Crusher machine is self-developed, and we promise that it can be upgraded free of charge within the whole life cycle of the machine. The machine parts are of international famous brands, and the self-made parts are from factories that have passed ISO9001 quality certification system. The hardware function and quality performance can reach or be comparable to the international similar level. Through continuous optimization of configuration and cost control, we strive to make sure that the owners can afford it and use it well.