沿革
1978: Established E SHA Chemical Co., Ltd. on Dihua Street
1984: Established the Import Department and moved to Yitong Street
1985: Founded the affiliated company Yuan Hao Enterprise Co., Ltd.
1989: Moved into a self-owned office in the Jianguo N. Rd. office building
1993: Established a branch office in Hong Kong
Annual Bidding Statistics
| Award Year | Number of Winning Bids | Total Award Amount |
| 2014 | 3 | 10,337,100 |
| 2015 | 4 | 12,338,498 |
| 2016 | 1 | 476,280 |
| 2019 | 1 | 1,821,750 |