| 3/20/2018 | 392010890000 | PLASTIC SERIES USED IN ELECTRIC INSULATION WORKS (NOT YGSKGTE.)
| 240 | Meter | 4721.36 | N/A | REMAR ENERJI VE ILETISIM MAL.PAZ.LTD.STI. |
| 3/21/2024 | 392049100000 | PVC FOIL (FILMS USED IN PIPE INSULATION) | 5400 | SQUARE METERS | 11886 | N/A | OTECHA TEKNİK YAPI MALZEMELERİ TİCARET LİMİTED ŞİRKETİ |
| 3/11/2018 | 392020290000 | INSULATION ROOF FILM
| 10 | Units | 1046.66 | N/A | NEPA TEKNOLOJI INSAAT DIS TICARET LIMITED SIRKETI |
| 3/22/2024 | 392010890000 | HEAVY LAYER (SOUND INSULATION BARRIER 8000-A/DET | 8000 | UNIT | 19515 | N/A | AUTONEUM ERKURT OTOMOTİV YAN SANAYİ VE TİCARET ANONİM ŞİRKETİ |
| 3/14/2024 | 392010890000 | SOUND INSULATION BARRIER- | 720 | UNIT | 35652 | N/A | CELLOFOAM SES YALITIM ÜRÜNLERİ SANAYİ VE TİCARET LİMİTED ŞİRKETİ |
| 3/18/2018 | 392010890000 | WATER INSULATION GEOMEMBRAN (IN ROLL)
| 10440 | Meter Square | 51255.15 | N/A | POLYFIN GEOMEMBRAN SANAYI VE TIC.A.S. |
| 3/8/2024 | 392010890000 | HEAVY LAYER (SOUND INSULATION BARRIER 7500-A/DET | 7500 | UNIT | 17439 | N/A | AUTONEUM ERKURT OTOMOTİV YAN SANAYİ VE TİCARET ANONİM ŞİRKETİ |
| 3/5/2024 | 392092000000 | POLYAMIDE INSULATION M-MATERIAL | 1 | UNIT | 733 | N/A | DÜRR SYSTEMS MAKİNE MÜHENDİSLİK PROJE İTHALAT VE İHRACAT LİMİTED ŞİRKETİ |
| 3/1/2018 | 392079100000 | INSULATION MATERIAL
| 218.7 | Kilogram | 2893.73 | N/A | ARÇELIK ANONIM SIRKETI |
| 3/1/2018 | 392010250000 | ** INSULATION PART (METER) 2018 / D1-05232 **
| 21600 | Meter | 20714.5 | N/A | MERCEDES-BENZ TÜRKANONIM SIRKETI |