| CPC H01L 21/67733 (2013.01) [H01L 21/67706 (2013.01); H01L 21/67724 (2013.01)] | 19 Claims |

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1. A semiconductor fabrication facility, comprising:
raceways on a ceiling of a structural construction, the raceways extending in one direction;
a vehicle rail assembly coupled to the raceways;
outer jig rails on outer sidewalls of the raceways and adjacent to the vehicle rail assembly; and
an outer jig on the outer jig rails, the outer jig including first rollers configured to rotate along the outer jig rails,
stoppers on the outer jig rails, the stoppers configured to fix the first rollers.
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