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About us

Express is a professional engine model manufacturer committed to bringing mechanical wonders within reach
We believe that through building, tinkering, and bringing things to life, people of all ages can connect with the joy of creation — and discover the engineer within.
Currently operating four miniature engine model brands: RETROL, HOWIN, SMETO, and ENJOMOR,we believe that through building, tinkering, and bringing things to life, people of all ages can connect with the joy of creation — and discover the engineer within.With a growing presence across North America, Europe, and Asia, Express is proud to share the art of mechanics with a global audience.
Our vision is to become the world’s most trusted engine model brand — where education meets innovation, and play becomes a path to possibility.We want to help shape a generation of thinkers, makers, and future engineers.
Our mission is to ignite curiosity and creativity through the power of mechanical building.We believe that building something real — something that runs — is the most engaging way to learn, grow, and think like an engineer.

SMETO ENGINE
SEMTO ENGINE is a brand deeply rooted and dedicated to the field of science and education, specializing in engine models. The name SEMTO is derived from the abbreviation of “Science Education Model to Everyone,” reflecting our commitment to making mechanical engineering science education models accessible to DIY enthusiasts like yourself.
Through in-depth communication with STEAM experts from different regions and long-term collaboration with designers in the field of engine engineering education, we have introduced a variety of educational models, accumulating rich experience.
Every educational model in our collection undergoes meticulous scrutiny and research by our development and design team. We provide clear assembly instructions, and our powerful factory produces high-quality components for various models, ensuring a positive assembly and usage experience for every user. Building with your own hands, spreading knowledge, and understanding the mysteries of the mechanical engineering world.
We consistently uphold a spirit of scientific rigor in manufacturing various engine model educational tools. Our goal is to popularize mechanical engineering knowledge to a broader audience in an enjoyable and engaging manner. We aim to pass down the wisdom crystallized in the achievements of the world’s industrial civilization from generation to generation, ensuring its perpetuity.
Product
SEMTO ST-NF2 Red
Bold and dynamic, the red version exudes racing spirit. Its high-simulation design and sporty accents capture thunderbolt speed. CNC-machined aluminum ensures a refined, lightweight build. Perfect for hands-on enthusiasts and collectors alike.
- High Simulation
- Miniature Design
- DIY Experience

SEMTO ST-NF2 Sliver
Sleek and modern, the silver version highlights mechanical precision. With a compact CNC-machined structure, it’s both elegant and powerful. The realistic look brings the engine's core to life. Ideal for display, study, or DIY exploration.
- High Simulation
- Miniature Design
- DIY Experience

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