核电产业对紧固件的选件标准，除了基本的功能要求外，还附带有其高稳定性、高连续性、高可更换性等要求，其中高稳定是指其紧固件要满足在不同环境中达到性能要求，且其非核心紧固件不良率低于百万分之一；高连续性是指要满足在产品设计使用周期内其性能不发生降低或失效；高可更换性是指其要满足便于拆卸、维修、更换。同时我国的核电事业后来居上，实现了自主设计，大部分产品采用国家标准(GB)。
Due to the dense distribution of its core, photovoltaic panels are high integrated. The commercial and civil small-scale panels are mostly installed on the roof of the top floor with narrow space, especially on the roof of the factory , which makes people select fasteners that are suitable for narrow environments and easy to remove and replace when installing the equipment.
At the same time, the selection of fasteners should also vary according to different regions. For example, the requirements for corrosion resistance of fasteners in the rain environment in the south are the same as in the dry environment in the north.
