Concentration and Major Customers and Suppliers	3 Months Ended
Mar. 31, 2021
Concentration And Major Customers And Suppliers [Abstract]
Concentration and Major Customers and Suppliers	(19) Concentration and Major Customers and Suppliers For the three months ended March 31, 2021, the Company had no single customer contributed over 10% of total sales. For the three months ended March 31, 2020, the Company had no single customer contributed over 10% of total sales. For the three months ended March 31, 2021, the Company had two major suppliers accounted for 81% and 10% of total purchases. For the three months ended March 31, 2020, the Company had three major suppliers accounted for 70%, 11% and 9% of total purchases.

Concentration and Major Customers and Suppliers

3 Months Ended

Mar. 31, 2021

(19) Concentration and Major Customers and Suppliers

For the three months ended March 31, 2021, the Company had no single customer contributed over 10% of total sales.

For the three months ended March 31, 2020, the Company had no single customer contributed over 10% of total sales.

For the three months ended March 31, 2021, the Company had two major suppliers accounted for 81% and 10% of total purchases.

For the three months ended March 31, 2020, the Company had three major suppliers accounted for 70%, 11% and 9% of total purchases.