cheapest and what best postal service is available.

Dear Sir Madame,---i wish to have a small sample of tarpaulin material sent from China to me here in Queensland Australia,---30 cm long by 30 cm wide.It would well weigh less that half a kilo---could even just go in a envelope.!--just like when we write letters and post to a relative.
What do you recommend other than slow shipping from China to Australia.--thank you, john