About Company

Chongqing Tonghui Gas Co., Ltd was founded in 2007, which is one of the largest specialty gas products manufacturers in Southwest China, mainly engaging in R&D, production, and sales of food-grade and electronic grade Carbon Dioxide, Nitrous Oxide, and other electronic-grade specialty gases. Tonghui Gas has an annual output of 1.1 million tonnes of Carbon Dioxide, 60 thousand tonnes of Nitrous Oxide, 2 tonnes of Germane, and 400 million pieces of 8g cream chargers.

Factory Area
8g Cream Chargers Per Year





With a strong R&D team and advanced production technology, we have the great honor to cooperate with distributors and customers in various industries including food and beverage, medical, semiconductors, calibration, analysis, aerospace, etc. Our experienced gas application team is also expecting to discuss with you based on their knowledge of your industry and application to meet your individual needs.


About Rotass

As a professional gas manufacturer, we launched the brand Rotass, including 8g/580g/615g cream chargers, 0.6L CO2 cylinder, and some accessory products. Considering the particularity of dangerous chemicals, we are looking for qualified distributors at home and abroad to meet local customer demand.

As a wholesaler, you have early access to the best prices and continuous stock, increasing your profit margin and improving turnovers. We offer local delivery for your pallet orders direct from our UK, US, and AU warehouses, which allows you to focus on generating sales without the hassle of storage or distribution.

Also, you can develop your brand through OEM service. Contact us to find out how we can help your business.