Preservative treatment of timber does not make it densified wood; extended limitation needs proof of suppression or intent to evade.

Preservative treatment of timber did not convert it into "densified wood" under Heading 4409.00 because the material showed only protection against biological attack, not the increased density, hardness, strength, or resistance required by Chapter Note 2 to Chapter 44; the treated timber was therefore not classifiable under that heading. On limitation, prior departmental awareness and earlier proceedings meant there was no reliable proof of suppression or wilful misstatement with intent to evade duty, so the extended period could not be invoked. The demand was accordingly sustainable only for the normal period, and the order dropping the notice was upheld.

---

---

Issues: (i) Whether timber treated with wood preservatives under the prescribed process became "densified wood" classifiable under Heading 4409.00 of the Schedule to the Central Excise Tariff Act, 1985; (ii) whether the demand was barred by limitation.

Issue (i): Whether timber treated with wood preservatives under the prescribed process became "densified wood" classifiable under Heading 4409.00 of the Schedule to the Central Excise Tariff Act, 1985.

Analysis: Chapter Note 2 to Chapter 44 requires that wood must undergo chemical or physical treatment and, by reason of that treatment, acquire increased density or hardness together with improved strength or resistance to chemical or electrical agencies. The material on record, including technical certificates, standards specifications, trade understanding, and the HSN explanatory notes, showed that preservative treatment of timber is intended to protect wood from biological attack and does not increase density, hardness, or strength. The explanatory notes also distinguish preservative treatment from densified wood, which is produced by impregnation with thermosetting plastics or molten metal, or by compression processes. The Revenue produced no convincing material to show that the treatment resulted in densified wood.

Conclusion: The treated timber did not become densified wood and was not classifiable under Heading 4409.00; the finding is in favour of the assessee.

Issue (ii): Whether the demand was barred by limitation.

Analysis: The record showed prior departmental awareness of the assessee's activities, earlier proceedings regarding the same subject matter, and no reliable material to establish suppression or wilful misstatement with intent to evade duty. On those facts, the extended period could not be invoked, and the demand could survive only for the normal period before the show cause notice.

Conclusion: The demand was barred by limitation except to the extent permissible within the normal period; this issue is also in favour of the assessee.

Final Conclusion: The appeal failed on both merits and limitation, and the order dropping the show cause notice was sustained.

Ratio Decidendi: Preservative treatment of timber does not amount to densification unless the process actually increases density or hardness and improves strength or resistance to chemical or electrical agencies.

---