Buy three Haier refrigerators in JD.COM, can all the goods with quality problems be refunded? COM？

You can't. According to the Law of People's Republic of China (PRC) on the Protection of Consumer Rights and Interests, if the product is known to have quality problems, you can apply for a return or exchange even after more than seven days. The goods returned by consumers shall be in good condition, and the business operator shall refund the price paid by consumers within seven days from the date of receiving the return.