Annual report pursuant to Section 13 and 15(d)

A. SUMMARY OF ACCOUNTING POLICIES (Details-Product warranties)

v3.3.1.900
A. SUMMARY OF ACCOUNTING POLICIES (Details-Product warranties) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Product warranties    
Beginning balance $ 44,288 $ 77,943
Warranty claims incurred (52,833) (45,710)
Provision charged to expense 75,100 12,055
Ending balance $ 66,555 $ 44,288