In guangzhou, to have such a liu a septuagenarian, due to the long-term care of disabled wife, feel the life more than inconvenience, then developed a fusion of manual and electric wheelchairs. Wanda, climb building the wheelchair and the products on the market, there is no obvious difference, just between the seat and roller, one more & other; Chassis & throughout; , before and after about four & other; Foot & throughout; Each has a big round with a small round, respectively. Focus should be on Liu Laohan find out the disadvantages of the products on the market, he has a wheelchair to tailor special castor wheels, the special wheel revolution can move forward, since can turn, very convenient. And he also in & other; Chassis & throughout; Above, the rack battery and dc motor, such & other Chassis & throughout; Front end is by ordinary materials, including steel, nylon, steel wire rope, chain of splice joint transmission device. Such a design, the wheelchair is more easily. Climb building experience is introduced, the wheelchair can hold more than 150 jins weight, the entire process of the stairs, in addition to outside the tread slightly advance need hard, other basic easy steps, each time about 4 seconds at the next higher level. Moreover, in a dark environment, does not affect the use, manual and continue operating even if battery is used up. Climb building wheelchair have all-wheel-drive vehicles currently on the market, crawler type, they are not big size, turn, inconvenient to carry and is not suitable for upper limbs powerless, use, and the price is generally high. Liu although the invention of the old man has not yet formally put into production, but has been to apply for the national patent. Old man said, once the production, he will be the most preferential price to need most ordinary citizens. Climb building a wheelchair, need to change the universal wheel design, you can benefit more people, innovative spirit of liu old man let wanda very inspired. We know demand customer inconvenience, achievements in market demand, so we should more standing in customer Angle perceive their inconvenience, but this is various, product design, product prices, products apply to people, etc. , all need to focus on.