The joint-stock company under the name DYAS engaged in the production of plywood and veneer was established on 30 October 1930. The plant premises were situated in the buildings of the former sugar factory owned by the May brothers, when dr.Robert May was also a partner of the company. The major shareholder was Ing. Roubíček. In the course of the year, the sugar factory equipment was dismounted and, at the same time, the machinery for the production of plywood, blockboards and veneer was installed. The production of plywood was started as early as 1931. The first production equipment consisted of two peeling machines, Fleck 3300 mm and 1600 mm. The veneer drying chambers were rather simple.

In 1932, other machines were installed. Fleck veneer cutters, double-deck dryer, gluing machines, and Topik jointing machine were put into service in June. The 12- deck pressing machine Siempelkamp and 12-deck pressing machine KSB were installed in the pressing shop. At the same time, sizing saws (longitudinal and transverse) were installed. Two sanding machines were used for finishing works.

In the first year of production, approximately 230 employees worked for the enterprise. From 1932, the two-shift operation and even three-shift operation at some working sites were introduced.At the outset of the plywood production in the DYAS plant, the composition of basic raw material differed from that used nowadays. Until 1935, alder was highly represented and was mainly imported (from Poland), the percentage of tree species used in the production in 1934 is given below: spruce 2,34%, beech 6,13%, okume 34,25%, alder 26,09%, and others 31,19%.

The processing of sawn timber demonstrates the growth of the production of blockboards. In 1932, the cost of sawn timber purchased amounted to CZK 49,203. In 1938, it amounted to as much as CZK 920,621.

Until 1940, the gluing process used the mixture of albumin adhesive that was produced in the plant, as well as casein adhesive. During the Protectorate, adhesives made in Germany were used, including Tegofilm.

At the beginning, only plywood was produced, in both dry and wet conditions (pressing in 10 pieces on the deck with adequate drying). The beginnings of the production of plywood were incomparable with the present. 16 pressing cycles per 8 hours were completed on one shift. In 1932, the blockboards were produced in minute quantities, usually, only approximately 100 pieces per day of blockboards of rod structure (spruce veneer core with a thickness of 7 mm).

The production greatly expanded in 1934-1935, when the annual output amounted to 4,550 m3 of plywood and 1,500 m3 of blockboards.

The output gradually increased with the introduction of new machinery and in the years 1938- 1940 amounted to 4,800 m3 of plywood, 2,800 m3 ofblockbords, and 1,200 m3 of door boards.

In the year 1935-1936, the processing of veneer waste was started. Using rather primitive equipment in the pressing shop (the pressing was performed on night shifts), the first boards were made of wood chips and dust, so called „Dyazity“ and „Dyaplány“. The testing of this production was carried out until 1939 and at that time the production was replaced with the production using dust and waste for the cores of doors.

During the years of occupation by Germany, the plant concentrated on the supplies for the armed forces (stocks, aircraft plywood, etc.). In the year 1945, the production started only slowly as the basic raw materials as well as components for the main machines, taken away by the Germans during their retreat, were missing. Starting with 1945, the plant was modernised and the output increased, amounting in the year 1969 to 14,100 m3 of plywood, 10,300 m3 of blockboards, 461 t of laminated wood, 100 m3 of aircraft plywood later on, etc. The plant has gradually introduced the production of moulded pieces, tubes, cross-overs, etc.