The Material Factory produces hardwood. The first plot requires Base level 11, and the building can be upgraded through level 30.
How hardwood production works
Production starts at 3 hardwood per hour. Each building level adds another 3 per hour, giving 30 at level 10, 60 at level 20 and 90 at level 30.
That figure is an hourly output rate. It describes what the factory produces over time, rather than the amount awarded when construction finishes. Additional factory plots have their own construction requirements and level progression.
Different materials, different buildings
The Smelter produces Upgrade Stones. The Material Factory's hardwood output is a different resource, even though both buildings belong to material production.
The Gear Factory handles equipment crafting and material synthesis. In that system, basic gear materials can be combined into advanced ones, and unwanted gear can be dismantled. Production buildings supply materials over time, while crafting and synthesis are separate operations carried out with the materials you own.
