Modèle De Télécommande De Radio-télécommande électrique Anti-gravité Toy Y241102

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syi this type of lens is widely used in optical instruments such as magnifying glasses, projectors, and telescopes, providing clear and magnified images.. the application is more reliable, maintaining high strength and safety while also having excellent optical performance.

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. the application is more reliable, maintaining high strength and safety while also having excellent optical performance. Lentille en verre optique Double convexe lentilles 80 mm 4-5x loupe de loupe Instrument d'enseignement expérimental industriel having a positive focal length, it is able to focus parallel rays onto a single point, thereby achieving magnification effect.