TinStar has established deep partnerships with multiple suppliers in both China and Vietnam.

Guangdong Enpack Packaging Co.,Ltd. was founded in January 2006, and now is the only public company in China who produces ends. Headquater is located in Shantou, Guangdong province,China. Their Shantou production base capacity is about 16 billion pieces ends per year. Enpack is a fast moving consumer goods metal packaging solution supplier, which is mainly supplying various ends, including Peel Off Ends, Food Easy Open End, Beverage Easy Open End, Chemicals Easy Open End and Normal Bottom Ends and etc. Enpack imported advanced facilities and technology from Japan. 2 lines of 6 lanes systems for beverage EOE, and 6 lines of 4 lanes system for food EOE, using press machine from Nidec Minster. 21 lines in total for POE production. Enpack products have been exported all over the World with the main export markets being the European Union, the Middle East, and Southeast Asia.

Zhejiang Eyuan was established in 1988, an experienced Easy Open End manufacturer based in Yiwu, Zhejiang province, China. Their capacity for Easy Open End of ETP and TFS is 5 billions pieces and of Aluminum is 6 billions pieces per year. Eyuan supplies diverse ends inclunding Canned or Dried Food and Beverage Easy Open End, Beverage Screw cap, Sanitary End, Two-Piece Can and etc. 60% of Eyuan's production is for export and they have exported to Europe, the Middle East, and Southeast Asia, and their exports share accounts for over 45% of the total in China. In the past 30 years, they ranks first in China's EOE and they are currently the largest food EOE mill in Asia.

Shanghai Quanjiang Packaging Materials Co.,Ltd. was established in 2001, located in Shanghai, China. It is a deep-processing mill, producing Easy Open End, normal end, lacquered and lithograph steel and etc. Their capacity for Easy Open End is 4 billion pieces per year with 50% of production for export, capacity for normal ends is 1.5 billion pieces per year with 40% of production for export. Quanjiang imported some advanced facilities from Japan and German. 10 production lines for normal ends, and 20 production lines for EOE. 7 lacquering lines, including 1 double-lacquered German Koenig & Bauer AG (KBA) line. 1 coil-lacquering line. 5 lithograph lines, including 1 Japan advanced lithograph machine Fuji 4-color UV PRIMEX-P452 and 2 2-color Fuji lithograph machiches. They have exported to Russia, Japan, Israel, Portugal, Chile and Southeast Asia.

CPMC is manufacturer of packaging products for a comprehensive range of consumer goods in China, one of the core business divisions under COFCO Group,with more than 30 subsidiaries strategically located across China. They engage in the production of tinplate packaging (three-piece beverage cans, food cans, aerosol cans, metal caps, steel barrels, round & square shaped cans, printed & coated cans etc.), aluminum packaging (two-piece beverage cans, one-piece cans) and plastic packaging, mainly serving a wide range of consumer goods like canned food, beverages, household chemical products, and in particular, tea drinks, carbonated drinks, fruit & vegetable juice, beer, dairy products, etc.

KJFC, full name is KIAN JOO CAN FACTORY BERHAD, is a Malaysia-based company with several subsidiaries in Malaysia and one production base in Vietnam. It is one of the largest packaging company in the ASEAN region.Tin cans and ends are mainly produced in Malaysia and Vietnam, while aluminum cans and ends are mainly produced in Malaysia. They supply 2-Piece & 3-Piece metal cans and ends in various applications, such as sweetened condensed milk cans, processed food cans, aerosol cans, beverage cans, confectionery & mooncake cans, chemical & ink cans, edible oil cans, paint cans and etc. They also have advanced painting lines, including one 8-color line and several 2-color lines for supplying lacquered steel sheets and lithograph steel sheets. They have exported to Japan, Myanmar, Indonesia, Thailand, Singapore, Taiwan, Australia, Philippines, Middle East and etc.

Paulin was founded in 2018, belongs to Newtree Group, which has more than 30 years of experience in metal packaging production. It is a Taiwanese company, one of their mills is in Shanghai and the other mill is in Vietnam. Their vietnam mill, mainly produces 3L/4L/5L/18L/20L Chemical Cans(round/rectangular/square). They also have 1 lacquering line and 1 lithograph line for supplying lacquered steel sheets and lithograph sheets.