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See Chinese contents: GB/T 40178-2021 GB/T 40178-2021: Ophthalmic optics - Formers
This document specifies the characteristics of the formers which are used by the edge-cutting instrument when the lens is edge-cut. This document applies to the formers which are used by the edge-cutting instrument when the lens is edge-cut. This document does not apply to separate formers which are required for additional processing of lenses, such as grinding.
