澳大利亚
I've had the Ergotune Supreme for over five years, and it's been an excellent chair. The build quality has held up really well, especially considering the reasonable price. Ergotune is also one of the few brands that caters to people taller than 195 cm, which makes a big difference. I highly recommend their chairs. It's just a shame they no longer sell the Supreme.
I emailed Nillkin support on the same day I placed the order and asked for cancellation because I selected the wrong model. The request was sent shortly after the order confirmation and well before shipping. They ignored the email and shipped the item anyway. The item arrived and their policy now states I must pay for return shipping to receive a refund. This situation exists only because they failed to process a clear cancellation request sent before dispatch. There was no communication from their side at any point during this process. No response to the cancellation request. No acknowledgement. No attempt to resolve the issue. This shows poor customer support and poor order handling. When a customer contacts support immediately after purchase to cancel, the order should not ship. Now the burden and cost of fixing their mistake sits with the customer. Based on this experience I would not recommend buying from Nillkin.