This greenhouse is made of Polycarbonate Panels, which can retain heat in winter and diffuse light for even plant growth, and block 98% of the harmful UV rays.Its feature is that it can be extended as needed.
https://dysgreenhouse.en.made-in-china.com/product/HjRJkAadHKcU/China-2020-New-Design-Garden-Greenhouse-Multi-Span-6mm-Polycarbonate-Sheet-Green-House-Aluminium-Garden-House-for-Vegetables-RDGS0818-6mm-.html?expoName=agriculture-food&source=all_exhibitors&utm_source=youtube&utm_medium=free&utm_campaign=posts

Made-in-China.com

Thanks for the great information