How is the soft black edge of stainless steel polished?

Soft light shooting, soft light paper can be made into a cylinder, or surrounded by curved milky plexiglass, and the light is distributed around the periphery, so that the light is soft and the high floodlight is reduced. When shooting the faucet, fix it on the lamp stand, put five flashlights with soft light boxes on the front, back, left and top respectively, add a layer of soft light paper in front of the front, back and right lights, and block the white foam plastic plate at the gap on the top, bottom and left front sides to form a plurality of black and white blocks and lines on the faucet. The camera shoots horizontally at the same height as the faucet through the gap between the left front reflector and the front soft paper. Adjust the height of each lamp when shooting to achieve the ideal visual effect.