Group 1 - The core viewpoint of the article is the successful commissioning of a 400,000 tons/year sulfuric acid production facility by China Chemical Engineering Thirteenth Construction Company in Hubei Province, which utilizes advanced technology and achieves high conversion rates of sulfur dioxide and absorption rates of sulfur trioxide [1] - The facility employs a "3+1" two-turn two-absorption process to produce 92.6% concentrated sulfuric acid, with a total sulfur dioxide conversion rate exceeding 99.8% and a sulfur trioxide absorption rate of 99.9% [1] - This project is a key initiative in Hubei Province and represents the largest single investment industrial project in Huanggang City, establishing a foundation for the company to undertake similar major projects in the future [1]