Shandong Century Hongtu Vacuum Equipment Co., Ltd. is located at No. 5 Liushan Street, Yanjiao Development Zone, Sanhe City, Hebei Province.Yanjiao, located 30 kilometers east of Tiananmen in Beijing, is affiliated to Sanhe City, Hebei Province. It is one of the ten towns under the jurisdiction of Sanhe City. As the western district of Sanhe City, it was named after it was located on the outskirts of Yan State (today's Beijing) during the Spring and Autumn Period and the Warring States Period.