
YOUR PLASTICS EXPERT PARTNER
Our manufacturing team offers plastic part design, mould manufacturing, injection and compression moulding, and sealing services. We procure metal, rubber, and other parts and assemble plastic and multi-material products for our clients. Quickly, cost-effectively, and with precision. Made in Finland.
CONTRACT MANUFACTURING
Product design
Involve our specialists early in your product design process to ensure a fast and smooth manufacturing run. We will also help you to select the most suitable materials for the envisioned application
Mould manufacturing
During the mould design phase, our tool technicians consider all your needs for optimal results. Our cost-effective in-house tool manufacturing will boost (or help improve) your competitiveness.
Mould procurement
For more flexibility, we have long-term cooperations with different mould producers in Finland, Europe, and China. Together with them, we examine and discuss your product drawings, check the manufacturability, and any need for change. Then, once you have approved the tool design, the manufacturing begins.
Manufacturing and assembly
You will receive the needed batch of components according to the agreed schedule and contract terms - anywhere from a few hundred to over one million pieces a year.
Mould maintenance
We offer regular tool maintenance to our customers because it is critical for long-term usability and functional reliability. It affects the products’ quality and is cheaper than repairing or manufacturing new moulds.
Logistics
Your products will be sent out quickly and effortlessly to the destination named by you with the agreed customised labelling and packaging. In addition, we offer professional packing and flexible warehousing.
Injection moulding
Injection moulding is the most common method for manufacturing plastic products requiring dimensional accuracy. It is best suited for producing batches of over one thousand pieces. Our largest injection moulding product weighs 25 kilograms.
PUR sealing of components
Our fully automated production line offers customer-tailored and unique sealing solutions with high quality and excellent reproducibility. We can seal multidimensional pieces manufactured from metal and plastic.
Raw material selection
Our customers usually ask us to help them find the best polymer type and grade for their application. Our team and broad network of raw material suppliers analyse the working environment of the new part or assembly and choose the material with the most suitable properties to meet the environmental and all other requirements.
Plastic products and components for industrial applications
Leomuovi manufactures products, components, and subassemblies for different industries as a contract manufacturer. We have over 3000 customers, from individual entrepreneurs to large industrial companies. The plastic products we manufacture are used in e.g..
- the construction industry
- the electronics industry
- the machinery industry
- the metals industry
- the furniture industry
- the automotive industry
- the logistics industry
- civil engineering/infrastructure construction
- the HVAC industry
- health care equipment and accessories
- the defence industry
Ask for more information about design, materials, production, and the opportunities they provide.
Our specialists
The smallest part weighs 1g and the largest -
Share of contract manufacturing
Factories
77 injection moulding machines, the largest is
Recycled raw materials

Supervised quality
We continuously monitor and supervise the quality of our production. Our cost-effective, safe, and environmentally friendly operations are certified in accordance with the ISO 9001 quality standard and the ISO 14001 environmental standard.