Specifications: PREFABRICATED HOUSES- The most modern system Prefabricated houses are made of a set of wall and ceiling panels, assembled on a previously available foundation. The panels are of the sandwich type with water-proof siding (metal-plastic, I. E. Metal with PVC coating; fiber-reinforced gypsum; or vinyl siding whose life exceeds 100 years) and lining made of some decorative material (fiber-reinforced gypsum; gypsum board; plywood panels; wainscoting panels; or MDF). The panels interior is made of high-density, hard cellular polyurethane with excellent heat-conductivity parameters. The panels are joined by special latches assembled previously therein. The latches have both locking and clamping effect. The construction of the gusset panels is reinforced during their manufacture. The wall and ceiling panels are surmounted by a firmly fixed roof structure made of solid wood and a light roof made of unduline, or bituminous roof-tiles; the roof may be also made of LT sheet iron. At the clients choice, the houses may be supplied with electrical installation or water-main and sewerage. Term of manufacture and assembly: Between 4 and 8 weeks. -no expensive mechanization required for assembly or disassembly Actually, the prefabs may be assembled or disassembled a countless number of times Polyurethane foam itself possesses the characteristics of a construction material. The metal sidings contribute further to its solidity and strength The used materials endow the structure with high quality, long life, reliability, stability, and strength against winds, earthquakes, or other loadings. Part of the wall panels are reinforced by vertical or slanting friezes to provide the required reinforcement against horizontal loadings. High-rating thermal resistance and thermal stability The panels thermal isolation pertains to the class of refrigeration isolations. It is bi-directional -against high summer temperatures and low winter temperatures. Fire-proofness Noise-proofness The cellular polyurethane isolation used in the offered prefabs enhances noise-proofness because of the great noise-absorption capacity of cellular polyurethanes porous structure. Ecological friendliness 100 % ecological friendliness of isolation and all used materials. The system boasts a very high potential.