Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details 1)

v3.19.1
Segment Information (Details 1) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Identifiable long-lived tangible assets $ 8,249,959 $ 8,129,440
United States [Member]    
Identifiable long-lived tangible assets 7,953,632 7,898,806
China [Member]    
Identifiable long-lived tangible assets $ 296,327 $ 230,634