| 摘要 |
Plastic tray for eggs which can readily and stably be stacked or packed in layers within a carton by means of novel convex and concave projections provided thereto which cooperate with the corresponding convex and concave projections provided to another plastic tray of the same kind when a number of trays of the same kind are disposed one over the other by turning them alternately at an angle of 180 DEG , and which can rightly be disposed in the manner mentioned above by means of handling portions provided to opposite two flanges of the tray and having configurations different from each other.
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