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Note 4 - Inventory (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Inventory, Current [Table Text Block]

		June 30, 2022				December 31, 2021
Furnace parts and supplies		$	477,599			$	213,224
Raw materials			2,292,852				2,144,067
Work in process			1,080,722				1,671,290
Finished goods and filtration systems			2,014,225				1,660,907
Reserve for obsolescence			(419,985	)			(268,470	)
Net Inventory		$	5,445,413			$	5,421,027

X

- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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