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BSI is a leading supplier of high quality Hatches and Skylights to the Wind Energy Industry – World Wide. We have for many decades supported the World Leading Wind Turbine manufactures’. Besides our Standard Product Range, we supply and develop Tailor Made Hatches for Wind Turbine Nacelles and Wind Turbine Blades, directly from our own Engineering & R&D Center. We are ISO 9001 certified by Bureau Veritas Denmark.