Shane is pretty right. Queensland importation is going to be the same as for the rest of the country anyway. Unbroken sealed containers clearly labelled by the manufacturers and clear documentation and descriptions of the chemical nature of the contents will probably be required. Probably there is a unit size limit as well.
Anything which has been opened will be treated with a certain amount of suspicion unless you can prove what it is. Difficult.
Personal effects up to a certain value are permitted and others of a specified household nature also, before import duty (probably at 10% GST rate) is applied.
I agree you should approach the Customs people with a list of what and how much of it you wish to import. They should be able to give you a pretty clear answer - better than the shipping company, I suspect. Better to email or even phone them - searching Government websites for information is bound to bring on frustration and little enlightenment.