ChangXin Memory Technologies, Inc. (CXMT) is a privately-owned Chinese semiconductor company that designs, develops, and manufactures Dynamic Random-Access Memory (DRAM). It is headquartered in Hefei, Anhui province, and is China's largest DRAM integrated device manufacturer (IDM). 

Company overview

Specialization: CXMT focuses on DRAM design, manufacturing, sales, and research and development for a wide range of consumer and enterprise products.

Applications: The company's DRAM chips are used in various products, including:

Mobile devices and smartphones

Computers and servers

Virtual reality (VR) headsets

Internet of Things (IoT) devices

Market presence: CXMT sells its products primarily within the Chinese consumer market, with Chinese memory module manufacturers using CXMT chips in their products. The company is expanding production capacity and aims to increase its global market share. 

Key products

LPDDR5: This is CXMT's low-power, fifth-generation double data rate synchronous DRAM. It features a 12Gb single-die density and offers significant improvements in speed and power efficiency over its predecessor, LPDDR4X.

LPDDR4X: A fourth-generation, low-power DRAM designed for mobile devices. It offers high bandwidth and low power consumption.

DDR4: A fourth-generation synchronous DRAM that provides faster speeds and lower power consumption compared to DDR3. It is used in devices like servers, desktops, and laptops.

DDR4 Module: A high-speed module version of DDR4 that is suitable for embedded systems and industrial environments. 

Notable developments

IPO plans: In October 2025, it was reported that CXMT was preparing for an initial public offering (IPO) on the Chinese mainland. The move is viewed as a way for China to boost its self-sufficiency in the AI memory chip market.

Manufacturing Expansion: CXMT has been expanding its production facilities. After a delay, the company is mass-producing DDR5 memory and increasing its overall manufacturing output. 

State backing: The company has received significant investment from government-owned entities in Anhui province, contributing to its growth and development. U.S.-China tensions: CXMT has been a point of discussion in the context of U.S. export controls and China's push for semiconductor independence. In 2023, a U.S. lawmaker urged trade curbs on CXMT.