With the rapid development of modern industry and the continuous improvement of people's living standards, people's demand for packaging boxes will continue to increase, and higher requirements for the quality of iron boxes will also be put forward. Increasing short-run jobs, improving processing quality, and reducing production costs are also market pressures and problems faced by carton packaging companies.
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A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable". In its simplest form, it consists of a spool (or drum) attached to a hand crank.
http://www.overlandwetour.com/winch/

A typical simple screwdriver has a handle and a shaft, ending in a tip the user puts into the screw head before turning the handle. This form of the screwdriver has been replaced in many workplaces and homes with a more modern and versatile tool, a power drill, as they are quicker, easier, and can also drill holes.
http://www.kintytool.com/screwdriver/

The mouth roll forming process requires good elongation properties of the board and the plastic coating. A well formed mouth roll provides stiffness and handling properties in the cup. The basis weights of the cup boards are 170–350 g/m2.
http://www.justarpack.com/paper-bowl/

Stainless steel pipe is a kind of hollow long round steel, which is mainly used in industrial transportation pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and so on.
http://www.jstisco.com/stainless-steel-pipe/