Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments and contingencies

Schedule of rent expense

The Company utilizes leased facilities and operates equipment under non-cancelable operating leases through July 2030. Below is a table of key properties :

Properties

			Lease
	Annual		Expiration
Location	Rent		Date
Auburn, Washington	$	60,000	Month to Month
Baton Rouge, Louisiana	$	24,600	Month to Month
Champaign, Illinois	$	654,000	12/2024
Champaign, Illinois (2nd location)	$	305,000	9/2021
Charlotte, North Carolina	$	31,000	5/2021
Escondido, California	$	219,000	6/2022
Hampstead, New Hampshire	$	33,000	8/2022
Long Beach, California	$	27,600	2/2022
Long Island City, New York	$	815,000	7/2021
Ontario, California	$	110,400	12/2021
Pearl River, New York	$	150,000	12/2021
Riverside, California	$	27,000	Month to Month
Rantoul, Illinois	$	36,000	2/2021
Smyrna, Georgia	$	465,000	7/2030
Stony Point, New York	$	105,000	6/2021