Yuchai and Yudong are not the same trademark. The products produced by the two companies are also different. Yuchai trademark applicant is Guangxi Yuchai Machinery Group Co., Ltd., Yudong trademark applicant is Hechi Yudong Vehicle Co., Ltd., and the registered address of the trademark is Hechi City, Guangxi. The trademark is registered in class 12. Yuchai and Yudong are actually well maintained and their accessories are OK, so there are differences and advantages between them. If we compare Yuchai engine with Yudong engine, Yuchai engine is cheaper than Yudong engine, its accessories are easy to buy and its fuel consumption is lower than Yudong engine. Yuchai is a joint venture, which uses more oil and costs more, but the maintenance rate of Yuchai is lower than that of Yudong.