| 3/13/2018 | 391990803000 | SYNTHETIC INSULATION MEMBRANE
| 2395.87 | Meter Square | 63709.4 | N/A | SOPREMA YALITIM SANAYI VE TICARET LTD.STI. |
| 3/4/2018 | 390720990000 | MEMBRANE ADHESIVE EPDM (THAT IS NOT IN SOLUTION IN AN ORGANIC SOLUTION)
| 24324 | Units | 74718.42 | N/A | BAKA YAPI MALZEMELERI INS.SAN.VE TICA.S. |
| 3/14/2018 | 392190909000 | PVC MEMBRANE
| 5940 | Meter Square | 46181.95 | N/A | M.K.INSAAT TAAH.IS.SAN.VE TIC.LTD.STI. |
| 3/8/2018 | 392010890000 | MEMBRANE (BEAU426578-8 MSCU979364-2)
| 27337.5 | Meter Square | 98933.9 | N/A | ISTANBUL TEKNIK INSAAT SANAYI VE TICARET ANONIM SIRKETI. |
| 3/8/2018 | 392010890000 | MEMBRANE (MEDU4375878-MEDU7273308-TCNU8996773-TRLU7134077-MSCU8276521-MSDU7503650-SEGU6095070-TCNU1590015)
| 82012.5 | Meter Square | 296794.52 | N/A | ISTANBUL TEKNIK INSAAT SANAYI VE TICARET ANONIM SIRKETI. |
| 3/18/2018 | 392010890000 | MEMBRANE (TGHU8077177-DFSU6741107-MSCU9654797-TCKU9065370)
| 45562.5 | Meter Square | 165073.14 | N/A | ISTANBUL TEKNIK INSAAT SANAYI VE TICARET ANONIM SIRKETI. |
| 3/12/2024 | 392190600012 | SYNTHETIC INSULATION MEMBRANE (TECSOUND SY 3/5) | 4714 | SQUARE METERS | 19786 | N/A | SOPREMA YALITIM SANAYİ VE TİCARET LİMİTED ŞİRKETİ |
| 3/14/2024 | 392190600012 | SYNTHETIC INSULATION MEMBRANE (TECSOUND SY 5/0) | 7085 | SQUARE METERS | 33150 | N/A | SOPREMA YALITIM SANAYİ VE TİCARET LİMİTED ŞİRKETİ |
| 3/8/2024 | 320710000000 | OPACIFIER PREPARATION-MEMBRANE | 50000 | KILOGRAM | 99714 | N/A | SERAMİKSAN TURGUTLU SERAMİK SANAYİ VE TİCARET ANONİM ŞİRKETİ |
| 3/20/2024 | 842199900019 | MEMBRANE SHEATH FIBER | 16 | UNIT | 14415 | N/A | TEKNİK ARITMA MÜHENDİSLİK MÜŞAVİRLİK HİZMETLERİ TAAHHÜT TİCARET VE SANAYİ LİMİTED ŞİRKETİ |