Overall great experience with some minor improvements!

We arrived early in the morning and got a shuttle from the airport to the car rental company, which took about ten minutes and was fairly convenient. However, during pickup, the company did not explain the types of insurance available. The basic rental package did not cover anything. When returning the car, the service agent insisted we provide photos of most of the existing damage or paint chips. Essentially, if you don't take pictures or if they are not clear, the company assumes you caused the damage. Although we had photos of some scratches, there was one we missed photographing, which resulted in a charge of AUD 3000!!! They used a magnifying glass to find scratches, claiming the fee was for activating the insurance. This fee is enough to replace vehicle parts entirely. It seems like they make money off these charges. They said there were no other Chinese rental companies in Australia... I recommend carefully choosing a company. Generally, basic rental costs with Avis or Budget are not this nitpicky. Even if you buy insurance, photograph the entire vehicle inside and out, otherwise, you never know what kind of trouble might arise.

I’m surprised it was run by group of Chinese operator

This is definitely an upstart company that is bizarre. First, you wait for A LONG TIME to get the shuttle, then you're taken to the rental car office, which is basically an office building, which is nondescript. The rules for taking a car here are much more strict than a typical car rental agency- no messes, no spills or you get an extra charge. It took A LONG TIME to get the car with no wait, cant imagine what it would be WITH a wait. We luckily got the car back without incident. Another thing, they open at 8am, so if you have an early flight, you need to book with someone else, because you have to ask for an early drop off, and it's not guaranteed.

The only negative with the booking experience is the delay in receiving the $1500 deposit. I was told it would take 2 weeks for that amount to be returned to my account. I feel this is too long. Can this be looked into, please?

Refer to above. Cost me 70 dollars more than I paid