A fluorinated polymer comprising a unit represented by the following formula, a method for producing fluorinated compounds and the fluorinated polymers, and an opticalelectrical material or coating material comprising the fluorinated polymer. Some subjects are difficult to capture in a video or still shot. Pressures applied to a compressible fluid in respective ones of the outer and inner pressure chambers urge the outer piston to extend from within the outer cylinder. If the identity of the image forming device is verified, a setting adjustment of the image forming device is initiated based on the secured data. the hose positioning mechanism maintains a constant height during hose positioning,2. Then, the quantized prediction residual and the weights are entropy encoded into a bit-stream for later decoding.