When did cement begin to exist in ancient times?

The earliest cement used in China was 1872, which was used at the British Consulate in Shanghai. Archaeological findings show that the site of F90 1 Hall in Qin 'an Dadiwan was the earliest place to use similar concrete in China. The main room of the building is similar to the ground of modern cement, and it is composed of aggregate stone and sandstone. This is the oldest concrete made of cement made of volcanic ash by ancient Romans in the world, and the earliest "concrete" ground in China.

The earliest cement plant in China is 1889. With the approval of Li Hongzhang, Tang, the general manager of Kaiping Mining Bureau, was founded in Tangshan and put into operation on 1892. 1906, Yuan Shikai, Minister of Beiyang, ordered Zhou Congying to re-do it and renamed Qixin Lime Company. 1907, Tangshan Fine Miantu Factory was renamed as "Tangshan Qixin Lime Co., Ltd.". The cement trademark is designated as "Longma Negative Taiji Map" brand (commonly known as "continental brand"). Mapai Cement is the earliest brand in China.