What is the relationship between Shandong David and Ma Wanli?

It's okay. Shandong David Machinery Co., Ltd., located in Weihai City, Shandong Province, was founded in 1998 by Shandong David Machine Tool Group as the main sponsor, and is an enterprise specializing in producing all kinds of drill chucks. Ma Wanli is a private brand under Guangdong Ma Wanli Industrial Co., Ltd., which is mainly engaged in research and development, design, manufacture, brand operation and marketing of leather products.