Tung Seed Vegetable Plant Made in Egypt

What is tung oil?
Tung oil or China wood oil is a drying oil obtained by pressing the seed from the nut of the tung tree ( Vernicia fordii ). Tung oil hardens upon exposure to air (through polymerization ), and the resulting coating is transparent and has a deep, almost wet look.
Where did Tung oil come from?
The tung oil tree originates in southern China and was cultivated there for tung oil, but the date of cultivation remains unknown. The earliest references for Chinese use of tung oil are in the writings of Confucius (551 – 479 BCE) around 500 to 479 BC.
Why is oil & gas a major economic sector in Egypt?
The oil and gas industry is one of the most dynamic economic sectors in Egypt. Hydrocarbon production is by far the largest single industrial activity in the country, representing around 24 percent of total GDP in FY 2019-2020. FDI in the oil and gas sector has increased from USD 9 billion in FY 2014/2015 to USD 47.8 in FY 2019/2020.
What was tung oil used for in the Song dynasty?
During the Song Dynasty (960 – 1279), tung oil was used for waterproofing on ships. The primary constituent is a fatty acid with a chain of 18 linked carbon atoms or methylene units containing three conjugated double bonds.