Large ridge greenhouse is a kind of greenhouse with high tunnel which has larger space inside and provides all-dimensional sunlight for inside plants. It is an increasingly popular trend for growers and a proven technology for crop production. Large ridge
For cinnamon tube,the thickness is 0.2~0.8cm .Outer surface grayish brown, slightly rough, some visible grayish white markings; and The inner surface isreddish brown, slightly flat, with fine longitudinal lines and oil marks.