Supply and installation of sandwich panels for building rooms and annexes. The sandwich panel is easy to dismantle and easy to install and light on the building. It is installed on iron between rooms for building annexes. Thicknesses vary: 5 cm, 7 cm, 10 cm. Available thicknesses for building annexes. Sandwich panel offers excellent thermal insulation: it significantly saves energy and air conditioning consumption due to its high heat resistance. Super fast execution: A complete annex can be finished within a few days compared to cement construction. Lightweight and durable: It does not impose a heavy load on the roofs, making it ideal for upper annexes. Resistance to weather factors: resistant to rainwater leakage, humidity, and fires. Finishing flexibility: It accepts the installation of various decorations and paints from the inside and outside, such as gypsum board and cement board.