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(4) Hardness: the hardness of natural crystal is large, and the stone is gently scratched on the jewelry, without leaving traces; If there are streaks, it's fake crystal.

Furthermore, glass art has found its place in galleries and exhibitions worldwide, where artists showcase their work to an increasingly appreciative audience. The fusion of glass with other materials—like metal and wood—has also gained traction, allowing for multidimensional installations that captivate viewers.

One of the most enchanting aspects of antique silver mirrors is the craftsmanship involved in their creation. Silversmiths would carefully mold silver into stunning forms, often incorporating motifs inspired by nature, mythology, and historical events. This attention to detail is particularly evident in the handles of these mirrors, which can be elaborately etched or bejeweled, making each piece a unique work of art. When one holds an antique silver mirror, they are not just holding a tool for reflection; they are cradling a piece of history, a tangible connection to the past.

In the future, while the industrial chain is further improved, China's photovoltaic will also develop in the direction of technological innovation. With the change of technology, the conversion efficiency of solar cells has been continuously improved, and the conversion efficiency of general commercial solar cells is about 10% to 24%. At present, the highest record of solar cell conversion efficiency in China is created by the silicon heterojunction cell independently developed by Longi Green Energy, up to 26.81%.