Whereas the ancient pottery including Haji pottery was made with clear characteristics of stacking up ring-shaped clays which was unique to Japanese archipelago, Sueki was made using the potter's wheel which was a completely different technique.
土師器までの土器が日本列島固有の特徴（紐状の粘土を積み上げる）を色濃く残しているのに対し、須恵器は全く異なる技術（ろくろ技術）を用いて製作された。