Beijing Watch Factory 北京手表厂 was founded in 1958.  From the start it focused on production of superior quality watches, and it continues to produce them today. According to BWF movement designer and master watchmaker Xu Yaonan, in the early years the workers' ambitious slogan was, "The watch won't leave the factory if it fails to catch up with (those made in) Switzerland."

Factory codes: BS, SB, SZB, ZB