The requirements for import of manufactured timber products for commercial use into Australia is as follows:
1. An Import Permit is not required.
2. Each consignment must be free of live insects, bark and other quarantine risk material prior to arrival in Australia.
3. Any packaging used with the consignment must be clean and new.
4. Any timber packaging and dunnage must comply with DAFF’s Non-Commodity Policy.
5. Where articles are less than 4mm in diameter (includes commodities such as toothpicks, matchsticks or skewers) the consignment may be released. Please note that this does not include tongue depressors or icy pole sticks.
6. All other consignments of manufactured wooden articles that have been treated offshore and are accompanied by an acceptable treatment or Phytosanitary certificate may be released on the presentation of documents. Acceptable treatments are:
a) Methyl bromide (T9047, T9075 or T9913);
b) Sulphuryl fluoride (T9090);
c) Heat treatment (T9912 or T9968);
d) Ethylene oxide (T9020); or
e) Permanent timber preservative treatment (T9987).
Note: Treatments a)-c) must be completed within 21 days of export. Methyl bromide and sulphuryl fluoride treatments must be completed before any surface coating has been applied to the goods.
You can see examples of the treatment documentation required at: http://www.daff.gov.au/aqis/import/general-info/co-reg/acceptable-docs