Recently, reporters found that the market performance of mid-to-high-end electrician brands was not satisfactory. Simon, Merlin Gerin, Tianji, Qisheng, Siemens, Legrand, NVC, Huatai Martin and other high-end electrical brands accounted for The share is less than 30%, and the channel is mainly retail and home improvement channels. The brand market has yet to be tapped.
According to market merchant He Lin, the well-known electrician products such as Shengli, Haoyi, Ou Lai, Jinnuo, Blue Cat, Coral, Jieying, Dragon Ball and Arnault are quite active in Lanzhou market. Prices are generally low, and they are highly competitive in retail, wholesale, and engineering channels. Their market share is over 70%, which has caused serious market impact on brand electricians.
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The diameter of the hemisphere ranges from 0.4mm-250mm, and the tolerance of the ball diameter can reach +/-0.001mm. The product consistency is good. It is widely used for coupling between optical fiber and semiconductor laser, or another optical fiber, or photodetector.
Fused Silica Ball Lens and hemispherical lens have high transmittance between 200nm and 2.2μm, and low thermal expansion coefficient, making it an ideal choice for the strict requirements of ultraviolet, visible and near-infrared spectroscopy applications. Ball lenses are commonly used to improve signal coupling between optical fibers, transmitters, and detectors, as well as objective lenses in endoscopes and barcode scanning applications. The hemispherical lens can simplify the integration of the entire system.
Quartz glass is a special industrial technical glass with a single component of silica. This kind of glass has a hardness of up to seven on the Mohs scale, has high temperature resistance, low expansion coefficient, thermal shock resistance, good chemical stability and electrical insulation properties, and can transmit ultraviolet and infrared rays. It is mainly used in laboratory equipment and refining equipment for special high-purity products. Because of its high spectral transmission, it will not be damaged by radiation (other glass will become dark after being irradiated by radiation), so it is also an ideal glass for spacecraft, wind tunnel windows and spectrophotometer optical systems.
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