SHANGHAI, May 27, 2026 — Stairway LLC of Mongolia and TZME (Tianjin) Co., Ltd of China today signed a strategic cooperation agreement to establish Gobi Metal Systems, a joint venture combining Chinese world-class fabrication capability with Mongolian on-site execution expertise. The signing took place at the inaugural Mongolia Investment Forum: Shanghai 2026, convened by CMM – Capital Markets Mongolia at the Grand Hyatt Jin Mao Tower. The Forum itself drew more than 300 delegates representing over 200 companies and organizations, with participants spanning China, Hong Kong, Singapore, South Korea, and Australia.

Gobi Metal Systems will target fabrication of heavy structural and mechanical equipment for Mongolia’s mining, energy, and infrastructure sectors, with a flagship facility planned for Khanbogd soum in Ömnögovi province — adjacent to the Oyu Tolgoi copper-gold mine as it ramps toward full underground production.

Stairway LLC, founded in Ulaanbaatar in 2011, brings over a decade of structural steel, corrosion protection, and on-site execution experience under the HSE and quality standards of Rio Tinto and Oyu Tolgoi. TZME is a Tianjin-based manufacturer of heavy mechanical and structural equipment with ASME, EN 1090, and ISO 3834 certifications, serving clients across multiple continents.

“This partnership is about Mongolia capturing more of the value from its own mining and infrastructure pipeline. Stairway has built its reputation delivering to international standards on the ground in the South Gobi; with TZME we can now match that capability at the manufacturing end. The goal, by Stage 2, is heavy fabrication done in Khanbogd — for Mongolia, in Mongolia”

— Gankhuu Dorjgochoo, Chief Executive Officer, Stairway LLC

“China and Mongolia are highly complementary in industrial manufacturing. We are pleased to establish Gobi Metal Systems with Stairway, combining TZME's manufacturing capability with Stairway's local execution to serve the long-term development of Mongolia's mining and infrastructure sectors."

— Li Kun, Chairman & General Manager, TZME

The signing is one of several cross-border transactions facilitated at MIF Shanghai 2026 — the first edition of the Forum held in China, and a strategic expansion of the Mongolia Investment Forum global forum series. China is Mongolia’s largest trading partner and most consequential economic neighbour; the Shanghai Forum is designed to deepen bilateral investment dialogue and move beyond introductions toward concrete, project-driven partnerships across mining, energy transition, and infrastructure.

Mongolia stands at an inflection point. With Oyu Tolgoi approaching peak production, a new generation of resource and energy projects advancing from feasibility to financing, and government focus on in-country value addition, demand for locally anchored heavy fabrication capability is expected to grow materially over the coming decade.

About Stairway LLC

Stairway LLC (est. 2011, Ulaanbaatar) specialises in structural steel fabrication and installation, corrosion protection, and on-site execution for major resource projects, working under international HSE frameworks with Rio Tinto and Oyu Tolgoi.

About TZME (Tianjin Zhonggang Mechanical Equipment)

TZME is a Tianjin-based manufacturer of heavy mechanical and structural equipment for the mining, port, bridge, and renewable-energy sectors, holding ASME, EN 1090, and ISO 3834 certifications.