Our Quality Assurance has concluded co-operation and quality control contracts with the Civil Defence Technology unit of VTT Technical Research Centre of Finland. The contracts ensure that the quality of our products complies with the laws and decrees by the Finnish Ministry of the Interior concerning the equipment and accessories used in civil defence shelters.

VTT supports prompt introduction and implementation of new, important products and methods in our company. Our co-operation has resulted in the introduction of many new, improved products, devices, production methods and production processes.

VTT’s testing, inspection and certification services have granted Suoja-Expert Oy the product certificates listed below.

These product certificates are recognition of our systematic, long-term development work. In addition to our own testing and controlling, VTT’s Civil Defence Technology carries out an annual quality control inspection and writes an inspection certificate.

Links to the product certificates granted by VTT are provided below (pdf files, in Finnish).

Ventilation equipment IVL-1	Ventilation equipment IVL-K
Pressure valve PV-1	Shut-off valvePV-K
Special filter ES-1	Special filter ES-K
Protective blower SP-1	Protective blower SP-K
Overpressure valve YV-1	Overpressure valve YV-K
Overpressure gauge YM-6
Airlock tent ST-1
Dry closet unit KK-6
Dry closet cubicle unit KH-3 ja KH-6
Reserve water tank VS-6
Refuse container JS-6 100 L
Civil defence shelter bed VV-6
Blast and gastight hatch HS-1
Blast and gastight hatch HS-K
Blast and gastight door SO-1
Blast and gastight door SO-K