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90.24 -machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics), and parts and accessories thereof:
光學,照相,電影,計量,檢驗,精密,鐘錶和手錶,鐘錶和手錶,樂器及其零件及附件的儀器及器具
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