Veijo Sydänmetsä is named CEO on 2 February 1968, the day that Pyhännän Rakennustuote is registered in the Trade Register. Operations begin with building leisure dwellings in the Kirkkoniemi industrial area in Pyhäntä.
The first single-family dwellings are delivered.
Single-family dwellings become the main product, named Jukka-talot.
The sawmill company Viiskasi Oy is founded as a subsidiary to ensure the supply of raw materials.
Pyhännän Einestuote Oy becomes a subsidiary with an increase in capital stock.
Rakennuskartio Oy is founded as a subsidiary operating in building contracting.
Pyhännän Einestuote Oy is sold to Oy Gustav Paulig Ab.
Viiskasi Oy merges with Pyhännän Rakennustuote Oy.
Construction of the Leiviskänkangas industrial area in Pyhäntä begins.
Rakennuskartio Oy is sold to the operating management.
Kontiotuote Oy in Pudasjärvi, producer of log constructions, is acquired.
A new, small-panel housing prefabrication factory is built in Pyhäntä.
A new sawmill is built in Pyhäntä.
The fixed assets of the Nordberg sawmill are bought in Pyhäjärvi.
A glulam factory and large-panel housing prefabrication factory is built in Pyhäntä.
Mellano Oy starts operations in Lapinlahti by buying the door business and fixed assets of Mellamino Oy.
Lappli-Talot Oy in Tornio is acquired.
The prefabricated house operations are grouped into Pyhännän Rakennustuote Oy, and the sawmill and glulam operations into PRT-Wood Oy. The parent company is named PRT-Forest Oy.
The business operations and fixed assets of Kaluste Nuorikko Ky are acquired in Pieksämäki and merged with Mellano Oy.
The glulam operations of PRT-Wood Oy are incorporated into PRT-Lami Oy.
The window operations of Pyhännän Rakennustuote Oy are incorporated into Piklas Oy.
Pyhännän Rakennustuote Oy buys Jokeri Talot Oy in Vieremä.
The glulam operations of PRT-Lami Oy are discontinued and the company merges into Pyhännän Rakennustuote Oy.
The prefabricated house business of Jokeri Talot Oy in Vieremä is discontinued.
Pyhännän Rakennustuote changes its name to Jukkatalo Oy. The new Pyhännän Rakennustuote Oy starts operating as a professional business.
Mellano concentrates its operations in Lapinlahti. Lappli-Talot closes down its factory in Tornio.
Pyhännän Rakennustuote acquires the Hartola factory. The decision is made to close down the sawmill and further processing operations of PRT-Wood Oy.
Lappli-Talot restarts production in Tornio. The sawmill operations of PRT-Wood Oy in Pyhäntä close down in the spring of 2017. Kontio Hus AB is founded in the summer of 2017.
Pyhännän Rakennustuote sells the Hartola factory.
Mellano was sold to executive management