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Note 5 - Property and Equipment: Property and equipment table (Tables)
6 Months Ended
Oct. 31, 2016
Tables/Schedules  
Property and equipment table

 (Estimated Life)

October 31, 2016 (unaudited)

April 30, 2016

Office equipment (1-10 Years)

  $          43,862 

  $          39,800 

Auto and trucks (3-10 Years)

            488,217 

            492,620 

Manufacturing equipment (2-20 Years)

         5,089,330 

         5,240,451 

Buildings (5-30 Years)

         8,267,729 

         8,667,889 

Construction in process

         1,182,753 

            583,954 

 Gross Property and Equipment

      15,071,891 

      15,024,714 

Less: accumulated depreciation

       (6,255,680)

       (5,870,637)

 Property and equipment, net

  $     8,816,211 

  $     9,154,077