Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details 1)

v3.20.1
Segment Information (Details 1) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Identifiable long-lived tangible assets $ 8,250,005 $ 8,337,105
United States [Member]    
Identifiable long-lived tangible assets 7,792,753 7,839,093
China [Member]    
Identifiable long-lived tangible assets $ 457,252 $ 498,012