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الشخص الذي يمكن الاتصال به Mr. gary
liaobu, Dongguan, Guangdong
This device is applicable to all-level measurement testing departments, spectacles manufacturers, spectacles retail stores, hospital**9;s department of ophthalmology and optical elements factories for conducting measurement of spherical lens diopter of spectacles or lens, diopter of cylindrical lens, astigmatism axis angle of cylindrical lens, prism degree and prism basal angle.