Dear Sir; Sernak Building Materials And Wooden Products is a glad to present our company. Sernak Building Materials And Wooden Products is a one of the biggest companies working on construction and wooden products business in Istanbul,Turkiye.I would like to introduce our new product Roofpanel branded Turkish OSB produced by our factory in Istanbul.Roofpanel / Building Board is a very high strength material which has the resistance to humidity and fire (on demand). This high quality product can be used for the application of roof coverings, facades, door frames, partition, decoration boards, ceiling and under the floor coverings. Briefly it can be widely used anywhere you need safely and easily. Roofpan is an economic and long term solution product, with its high resistance to fire which prevents unpleasent results of accidents.