According to CK Chang, president of the memory module firm Apacer Technology, the memory market's future might not be as grim as some organizations predict. In an interview with Digitimes, Chang said that DRAM demand is picking up thanks to seasonal factors, and that predicted price drops come from supply side issues. He says that prices will stabilize to "reasonable levels" in 2019, and that threats from Chinese DRAM manufacturers remain to be seen. Meanwhile, NAND prices are expected to stabilize after a flash oversupply in 2018. Prices for consumer SSDs, for example, have halved since the middle of December 2017. Prices for 120GB models have dropped below US$0.20 per gigabyte. Such unreasonable price levels indicate that the supply chain has been flooded by substandard NAND flash chips. Substandard NAND flash chips could destroy SSDs and cause a certain level of damage to data. Nevertheless, some firms still intend to sell lower-quality SSDs to respond to the continued decline in NAND flash prices. Such development will ultimately disadvantage end consumers.