Are Henan Sijian Co., Ltd. and Henan Sijian the same company? Please answer in detail and speed up, thank you!

Is a company, Henan Fourth Construction Co., Ltd. was originally the second company of Luoyang Engineering Bureau of China Construction Engineering Bureau, and was established in March 1957, and later renamed as Henan Fourth Construction Engineering Company. In May 2000, with the approval of the Henan Provincial People's Government, it was restructured into Henan Sijian Co., Ltd., located in Kaifeng, a famous city in the Seven Dynasties, with branches and living bases in Zhengzhou and Nanyang.