What is the fine-grained topic of the following text: In the documentary of the programme, which was actualized through the contributions of curator UNIDO, executer TTGV and Consultant METU, the cleaner production applications taken by six different firms who partook in the programme from five different provinces and different sectors is shown and commentary is given by the industrialists themselves. Only return the topic.
Cleaner production applications in different firms documented in a programme.