This is the last day of 2020. We are working on constructing the x-axis and y-axis, drillING screw spike on the y-axis using the aluminum  cutting machine so that we can put x and y together( BELOW IS THE PICTURE FOR THE ALUMINUM AXES ) . The 8.0 version of gear holder is also put to print. 2 articles about the enzyme-carrying polymeric nanofibers and electrospinning are also reviewed.