Things Done:
(1) Change sale search product product input, separate it to 4 inputs.
(2) Adding 5 latest sale histories from the product after it picked.
(3) Sale Detail sorting feature.
(4) Trying to fixing import excel for product_type (need to be testing).
(5) Make "PCS" as the default of Unit of Measure.
(6) Remove discount from Sales show.

Next to do:
(1) Odd data on bearing
(2) V-belt price on each inch
(3) Stock & Conversion for multi-stock
(4) Printing Sale