| 摘要 |
The pot is made in injected synthetic material and heavy material (6) is moulded in it. A vertical rib (5) projects from its lower surface (3) and vertical ribs (6) project from its lateral conical wall (4). The ribs can fold at their base (P) to hold for solid filling material. The folding zone is between a wider base part and a narrower upper part (5a,6a) and the upper part is bent downwards to a horizontal position. The lateral ribs limit the penetration of another pot.
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