Screening centrifuge (Tangshan) Co., Ltd., a subsidiary of 3HY was established

On July 29, 2020,  Screening centrifuge (Tangshan) Co., Ltd., a subsidiary of 3HY  was established

On November 10, 2020, the bidding website announced  3HY was the first candidate for winning the bid https://zb.zhaobiao.cn/succeed_v_36243408.html

On January 6, 2021, the self purchased workshop of concrete structure constructed by the listed company Zhongnan high tech was delivered for use.

In March 2, 2021, the official account of WeChat public in "beautiful Lutai"  released commencement news of the subsidiary

On March 3, 2021, the official website of Tangshan Municipal People's government released the commencement news of the subsidiaryhttp://www.tangshan.gov.cn/zhuzhan/zhengwuxinwen/20210303/1145986.html

On January 5, 2022, five leaders of Risun group visited the company.