Partner to demanding customers
Tekniseri Group designs and manufactures industrial labeling products, printed electronics and insulation — in six production units in Finland, Sweden and China.
KEMPELE · HEAD OFFICE The whole portfolio from one partner
Tekniseri partners with industrial manufacturers in the production and development of labeling products and insulation. We work on a one-stop principle: the entire portfolio of printed products and insulation — in Europe and Asia.
Our customers include some of the largest players in several industries. Yet no industrial company is too small to be served.
Our story
02 — HISTORYTekniseri is founded
Tekniseri starts out as a manufacturer of labeling products for demanding industrial customers. Over the years the expertise grows from screen printing to membrane switches, insulation and printed electronics — the company grows, enters new markets and builds long-term partnerships with its customers.
Suzhou, China
A production unit in Asia — local service for international customers in close cooperation with Finland.
Karnell Group AB becomes owner
Karnell is a long-term, committed owner of Nordic industrial companies, creating value over the long run.
Sealmaker Finland Oy joins the group
Sealing, insulation, damping, protection and packaging solutions strengthen the group's material expertise. The Rauma unit starts operating the same year.
SMF-Skylt joins the group
AB Svenska Maskinskyltfabriken (Linköping, founded 1916) brings printed metal sub-assemblies to the range.
Karnell lists on Nasdaq Stockholm
The listing brings long-term financial stability and more resources for developing our services — making Tekniseri an even stronger and more reliable partner.
* YEARS TO BE VERIFIED WITH THE CUSTOMER
Production units
03 — UNITS
For more than 40 years Tekniseri has served its customers and met their exacting requirements in printed products and industrial insulation.
Our team in Suzhou has served customers in Asia since 2010, in close cooperation with the team in Finland.
Metal plates have been made in Pori for decades — our partnerships with customers are strong and long-lasting.
Professionalism and flexibility have helped us build long-term partnerships with our customers.
SMF-Skylt joined the Tekniseri Group in 2024 — printed metal sub-assemblies are a perfect fit for the product range.
Group
04 — COMPANIESGroup management

Tekniseri Group Oy
The group's parent company — strategy, finance and group services. Domiciled in Kempele.
Tekniseri Oy
Manufacturing of labeling products and printed electronics — units in Kempele, Espoo and Pori.
Sealmaker Finland Oy
Sealing, insulation, damping, protection and packaging solutions for industrial manufacturers. Rauma.
sealmaker.fi ↗AB Svenska Maskinskyltfabriken
SMF-Skylt — printed metal sub-assemblies and machine plates. Linköping (2024).
smf-skylt.se ↗Tekniseri (Suzhou) Co. Ltd
Manufacturing of labeling products and printed electronics for customers in Asia — Suzhou, China (2010).
How we operate
05 — PRINCIPLESQuality that lasts
Our products mark, insulate and control equipment for decades — quality is documented and tested.
Partnership
Long customer relationships come from being involved already in product development and not disappearing after delivery.
Responsibility
Material efficiency, chemical management and occupational safety — responsibility is part of everyday production.
Let's get
started.
Tell us what you need — our experts help you choose the right material and manufacturing method, from design to delivery.
All contact details →
Joni HeikkiläSales · Finland
Vesa KilpeläinenSales · Finland
Vesa ToropainenSales · Baltics & export
Pilvi MäntyläKey Account Manager
Ville HuhtanenSales · Sealmaker
Carsten MiddelhoffSales · Germany