Increase independent tensioner device research and development, strengthen cooperation with other industries, identify key points, joint research on eccentric buckle tensioner, especially some large enterprises should actively introduce and digest international standards, promote the whole industry to a higher level, upper level, development and new technology, new material applications, in improving product safety and durability, while saving energy and reducing energy consumption, heavy-duty Tensioner reduces pollution and improves efficiency. Below, let's make a simple distinction and then explain what the requirements for lifting spreaders and rigging are? what, so that everyone can learn more new knowledge content and thus increase their knowledge. The basic conditions for the use of slings and the working slings after use can be said to be one of the common and commonly used slings, and this wire rope has many applications, and in some cases we can also see it.