Kingspan Insulated Wall Panels Kingspan TEK SIP Build System KTS 120 Kg M3 Rock Mineral Wool Insulation Rock Wool Pipe Reinforced Trend Work Trading (TWT) Fragrance Oil Set Green. A fragrance diffuser made of clear glass. Add aromatic oils and reeds, and the remaining amount of essential oil is easily visible. After use, wash and replace with different scented essential oils for reuse. Featuring a round design and herbal green fragrance, with hints of lavender, geranium, and musk.