It is to provide an electronic component packaging container excellent in mechanical strength. An electronic component packaging container which comprises a multilayer polyester sheet having a base layer comprising a polyethylene terephthalate type resin and a polycarbonate type resin and a surface layer comprising a polycarbonate type resin, formed on at least one side of the base layer, wherein the base layer contains from 70 to 97 wt% of the polyethylene terephthalate type resin and from 3 to 30 wt% of the polycarbonate type resin based on the total amount of the polyethylene terephthalate type resin and the polycarbonate type resin, and the thickness of the surface layer is from 10 to 30% of the total thickness.
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