| $X$ | $Y$ |
|---|---|
| डेक्रॉन | नियोप्रीन |
| $X$ | $Y$ |
|---|---|
| नोवोलेक | पॉलिस्टायरीन |
| $X$ | $Y$ |
|---|---|
| टेफ्लॉन | ब्यूना$-S$ |
| $X$ | $Y$ |
|---|---|
| ग्लिप्टल | पॉलीप्रोपीन |
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