08 May 2023 – 12 May 2023 Johannesburg (south_africa) 9th South African Conference on Photonic Materials 2023
14 Jun 2023 – 15 Jun 2023 Essen (germany) Plastics Recycling World Expo Europe – The international exhibition for plastics recycling
21 Jun 2023 – 24 Jun 2023 Chania (greece) 10th International Conference on Sustainable Solid Waste Management