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INVENTORIES (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
INVENTORIES    
Raw material $ 2,077,000 $ 2,178,000
Work in process 1,127,000 2,302,000
Finished goods 15,158,000 18,402,000
Inventories $ 18,362,000 $ 22,882,000