In 2002, the company was incorporated and the first drilling tool inspection team was formed, and the inspection business began to take off.

In 2005, started oil casing overhaul and pipeline inspection business and began the diversified development of inspection technology.

In 2008, we entered the international market for the first time and established gas seal inspection technology service capability.

In 2013, entered the metrology and testing business through mergers and acquisitions, and completed the construction of the second phase of Xinjiang Luntai overhaul base.

In 2016, the integration of testing business was completed, the testing group was formed, and the testing business went to the road of independent development.

In 2019, the comprehensive layout of the international market, the testing business revenue exceeded RMB 200 million for the first time.

In 2021, the shareholding system transformation will be completed, the registration of "Tong'ao Testing" brand will be completed, and the listing work will enter a new stage.

In 2022, we will introduce strategic investors, build a strategic layout of "one main and two new" business development, and enter the counseling stage of Xinjiang Securities Regulatory Bureau for listing.