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manufacture must" best laptop repair in hyderabad  "therefore take extensive precautions" "every time they enter our dust free" "clean rooms the result our wafers are" "fabricated in an environment that is" "more than 100 thousand times cleaner" "than an operating theatre" [Music] "completely free of dust the silicon" "discs arrive at the cleanroom" [Music] "here 25 wafers are packed into each" "hermetically sealed container and sent" "off on a journey that will take them" "through hundreds of manufacturing steps" [Music] "photo lithographic techniques transfer" "the circuit structures to the wafers" "rather like slide projection the key to"  toshiba laptop repair in hyderabad "this whole process is a solid mastery of" light "the silicon disk is spin coated with a" "photosensitive resist UV light transfers" "the circuit structure is depicted on a" "mask to the wafer" "the exposed parts of the resist are" "soluble and are removed by a developer" "the transferred structures can now be" 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