Mainly hard plastics. Paper and card/cardboard is laegely consumed within Australia by packaging and print paper producers, such as Visy. It is interesting to visit and have a tour of such plants if one gets a chance as they are interesting, especially to see how the paper/card is reprocessed into new product.
Steel is usually recycled locally and reformed into other products. Likewsie glass. Where supply of recycled materials exceeds demand or the price of recycled bulk materials are low, they are stockpiled waiting for future use. Generally steel and glass is too expensive to export as the freight/handling costs are high but the raw bulk price is low...especially glass as it can be made readily in most coutried from local raw materials.
Recycled hard plastic market in Australia is limited and that in excess to local demand is compressed, baled and generally exported.
Soft plastic market is also limited and there are only a few companies who reprocess the materials. The main market is for 'plastic' outdoor wood.
China's decision if it is actually fully implemented will most likely result in development of hard plastic recycling in Australia or export to another country like India. The problem with Australia developing such industry is it also need the manufacturing industries who consume such products. Generally recycled hard plastics can't be used for tg6e food or beverage industry.