Are Yangzhou Guoyu and Yangzhou Yang Guo a family?

No. According to relevant information, Yangzhou Guoyu and Yangzhou Yang Guo are not the same company, they are two independent companies. Yangzhou Guoyu is an enterprise specializing in the production and sales of R&D and electronic products, while Yangzhou Yang Guo is an enterprise mainly engaged in mechanical processing, precision manufacturing and product assembly. The two companies have different business fields and scopes, and they are not the same company.