Masan High-Tech Materials (MSR), an arm of Vietnamese conglomerate Masan, is expanding its tungsten resource base to help secure a critical input for the AI, semiconductor, and defense industries, potentially adding 115 million more tons of tungsten-polymetallic ore in its reserve

In a statement on Monday, MSR said the additional figure is enough to extend mining and processing activity by an additional 20 to 30 years. The added reserve is part of the exploration areas around its Nui Phao mine.

The Nui Phao Expansion area is estimated to hold approximately 55.19 million tons of resources, while Nui Chiem is estimated at approximately 60 million tons, based on Vietnam’s National Mineral Master Plan.

The company also plans to expand its tungsten oxide capacity to more than 8,000 tonnes WO₃ to meet rising customer demand, a move it said would not require significant capital given its existing APT capacity infrastructure.

Danny Le, Chairman of MSR, said the company has built a leading integrated tungsten platform outside China spanning mining, deep processing, and advanced materials supply, serving industries including AI, semiconductors, aerospace, energy, and defence. He said the latest progress strengthens the company’s long-term strategic position as scaled, deeply processed non-China tungsten supply becomes increasingly scarce.

The expansion leverages existing infrastructure and processing capabilities rather than requiring greenfield development, supporting a more capital-efficient growth pathway, MSR highlighted.

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