About us

Chongqing Tonghui Gas Co., Ltd., founded in 2007, is a leading specialty gas manufacturer in Southwest China. The company specializes in researching, producing, and selling food-grade and electronic-grade Carbon Dioxide, Nitrous Oxide, and other electronic-grade specialty gases.

Over the years, Tonghui has dedicated itself to praoduct innovation and increasing output. In 2022, we launched the new brand ROTASS, concentrating on food-grade CO2 and N2O, aiming to meet the rising market demands while optimizing the utilization of our resources.

Our Factory

Our Mission

Sustainability

We recycle all the waste and unqualified items at every stage of our process to minimize resource consumption.

Quality

In every step of the manufacturing to export processes, we invest millions and in maintenance, inspection and innovation to ensure your products well delivered.

Value Creation

As a gas supplier, we offer personalized solutions, tailoring gas content, purity, brand, and more cooperative terms to maximize customer satisfaction and deliver value to our target market.

Social Responsibility

We take our social responsibilities seriously by contributing to student loans to support education, aiding underprivileged areas to uplift communities, and sponsoring in social events to promote positive energy.