Note 15 - Related Party Transactions - Summary of Advances to Related Party Suppliers (Details) - USD ($)		Mar. 31, 2020	Dec. 31, 2019
Advances to suppliers		$ 864,816	$ 745,135
Ocean Pacific Seafood Group [Member]
Advances to suppliers	[1]	181,775	223,303
Revolution Industry LLC [Member]
Advances to suppliers	[2]	$ 683,041	$ 521,832

[1] Mr. Zhou Min Ni owns a 25% equity interest in this entity.

[2] The son of Mr. Zhou Min N, Raymond Ni, owns 100% of Revolution Industry, LLC.