What is the fine-grained topic of the following text: The 16th edition of the Saudi Plastic and Petrochemical Industries Exhibition, sponsored by SABIC as Diamond Sponsor, received critical acclaim from both regional and international exhibitors who have made significant deals and partnerships with Saudi companies in support of plans to develop high-value industrial products and activate the contribution of the plastic and petrochemical sector in driving the growth and diversification of the economy in line with the goals of the National Transformation Program 2020 and Saudi Vision 2030. Only return the topic.
The 16th edition of the Saudi Plastic and Petrochemical Industries Exhibition and its impact on economic growth and diversification.