2001 | The Beginning

OSS Dai Duong entered the stainless steel industry, laying the foundation for its brand with a commitment to supplying high-quality stainless steel products that meet the growing demands of the Vietnamese market.

2003 | Establishment of Dai Duong Manufacturing and Trading Co., Ltd.

On September 6, 2003, Dai Duong Manufacturing and Trading Co., Ltd. was officially established.

During this period, the company focused on expanding its stainless steel trading business, offering a diverse product portfolio while steadily developing a nationwide distribution network. This laid a solid foundation for its future investment in manufacturing.

2009 | A Milestone in Manufacturing Development

OSS Dai Duong established OSS Dai Duong International Joint Stock Company and invested in the Duc Hoa Stainless Steel Tube Manufacturing Plant (formerly Long An Province, now Tay Ninh Province), marking its transformation from a trading company into a stainless steel manufacturer.

The plant has an annual production capacity of:

• 15,000 tons of stainless steel tubes
• 2,000 tons of stainless steel round bars

Manufacturing products in Grades 201, 304, and 430, the plant serves a wide range of applications, including construction, architectural decoration, industrial manufacturing, household products, and export markets.

Its production system operates under the ISO 9001:2015 Quality Management System, with products certified to international standards including EN 10217-7 (Europe), ASTM A554 (United States), and JIS G3459 (Japan).

The company has also received numerous prestigious awards and certifications, including the Top 10 Vietnam Strong Brands Award, reinforcing OSS Dai Duong’s reputation for quality and reliability.

2021 | Celebrating 20 Years of Growth

Celebrating its 20th anniversary, OSS Dai Duong made a strategic investment in the Phu My Stainless Steel Coil Manufacturing Plant in Ba Ria – Vung Tau, with a designed annual production capacity of 90,000 tons of cold-rolled stainless steel coils.

This investment marked a significant milestone in the company’s development, enabling OSS Dai Duong to establish a more integrated stainless steel supply chain. The plant not only provides high-quality raw materials for the Duc Hoa Tube Plant but also supplies premium cold-rolled stainless steel coils to domestic and international customers.

The product portfolio covers a wide range of stainless steel grades, including 316, 304, 201, 430, and 410, serving industries such as construction, manufacturing, home appliances, kitchenware, architectural decoration, and precision engineering.

With continuous investment in advanced production technologies, quality management, and brand development, the Phu My Plant has become a key driver of OSS Dai Duong’s long-term growth and global expansion.

Since 2026 | Strengthening Our Market Position

After more than 25 years of growth, OSS Dai Duong has developed a fully integrated ecosystem spanning stainless steel coil manufacturing, tube production, trading, and distribution, serving customers in Vietnam and around the world.

Production Capacity

• 90,000 tons of stainless steel coils per year (designed capacity)
• 20,000 tons of stainless steel tubes per year
• 5,000 tons of stainless steel round bars per year

Complementing its manufacturing operations, OSS Dai Duong trades approximately 20,000 tons of stainless steel products each year. Its extensive portfolio includes stainless steel coils, sheets, seamless pipes, flat bars, angle bars, bright bars, and other industrial stainless steel materials imported from leading manufacturers in Japan, South Korea, India, Indonesia, and other countries.

With an extensive distribution network and exports to more than 20 countries across Europe, Asia, and Latin America, including Russia, Poland, Ukraine, Türkiye, India, Malaysia, Indonesia, Brazil, and Mexico, OSS Dai Duong continues to strengthen its position as one of Vietnam’s leading stainless steel manufacturers and suppliers.