Inventory

3 Months Ended

Mar. 31, 2023

Inventory

Inventory

2. Inventory

Inventories as of March 31, 2023 and December 31, 2022 consisted of the following:

	March 31,		December 31,
	2023		2022
Raw materials	$	403,358	$	393,253
Work in process		84,060		111,119
Finished goods		84,972		90,850
Total	$	572,390	$	595,222

Inventory write-downs to estimated net realizable values were $42,780 and $ 0 for the three months ended March 31, 2023 and 2022, respectively.