[4] It has been listed on the Dow Jones Sustainability Indices for 14 consecutive years and has achieved a top 10% S&P Global CSA score in its most recent 2024 ranking.

Through an ambitious diving program helmed by forty volunteer divers who are also Delta employees, the company plans to transplant and breed over a thousand corals to the marine protected areas around Tawan.

The coral breeding project adopts cryopreservation techniques and Delta's own LED lamps for restoration of the delicate ecosystem.

[citation needed] As a result of the US-China trade war, Delta cut its headcount in China by more than half and expanded operations in India and Southeast Asia.

[13] In December 2021, the company announced the acquisition of United States–based Universal Instruments Corporation for approximately 89 million dollars.

[14] In July 2022, Delta announced that they would be expanding their Plano, Texas facility with the addition of a 400,000-square-foot manufacturing, research, and development hub that could require "hundreds" of new employees and operate on 100% renewable energy by 2030.