Cai Huabo, a high-school graduate from a poor family in Jiujiang, Jiangxi province, has built Longsys Electronics into a global memory-chip company with a market value exceeding 100 billion yuan ($14 billion). Starting from a tiny trading counter in Shenzhen’s Huaqiangbei electronics market in the late 1990s, Cai and his twin sister have transformed the business into one of China’s leading independent memory suppliers, now competing internationally with industry giants such as Samsung and SK Hynix.
The rise of Longsys offers a rare case study in how a Chinese company broke into one of the most technically demanding and geopolitically sensitive segments of the global technology supply chain.
“There were no grand plans,” Cai recalled in an earlier interview. “Just learning what resistors were, what capacitors were, how people priced things.”
A turning point came in 2002 when Cai misjudged market demand and accumulated a large inventory of Japanese flash memory chips that turned out to be incompatible with mainstream products. Cash flow tightened rapidly.
The gamble paid off unexpectedly. In 2003, Apple’s iPod triggered a global surge in demand for flash memory, creating shortages across the market. Longsys’s once-unsellable stock suddenly became highly sought after. Cai cleared his inventory at a profit and learned a critical lesson.
That insight pushed Longsys toward manufacturing.
Longsys became an original equipment manufacturer (OEM), producing storage products for other brands. But margins were thin — often below 10% — and most of the profits flowed to upstream giants like Samsung, Micron and SK Hynix.
By 2012, FORESEE’s industrial-grade storage products, capable of operating in extreme temperatures from minus 40°C to 85°C, were adopted by China’s State Grid and railway systems. In 2015, the brand became a core supplier to Transsion, a Chinese handset maker that dominates many African markets.
That opportunity came in 2017 when Micron decided to divest Lexar, its consumer storage brand best known for memory cards used in professional cameras and even NASA missions.
After completing the deal, Longsys shut down Lexar’s US factory and shifted production to China, cutting costs by around 40% through automation and supply-chain integration. It also invested heavily in software optimisation and performance tuning.
In memory products, the “brain” is the controller chip — the semiconductor that manages data storage, error correction and communication with devices. Control over controllers is strategically important and technologically difficult.
In 2016, Longsys formed a deep partnership with US chipmaker Marvell, gaining access to low-level firmware and source code — an unusual arrangement that allowed the company to build internal expertise.
The result was the “WM” (Wise Memory) controller series:
WM7400 for UFS 4.1 storage, using advanced process technology and third-generation LDPC error-correction algorithms.
Longsys further integrated design and manufacturing through acquisitions in China and Brazil, allowing engineers and production lines to operate side by side.
This integration enabled Longsys to launch its PTM (Product-Technology-Manufacturing) model, offering customised storage solutions for clients such as Huawei, Lenovo, OPPO and BYD, covering everything from controller design to final testing.
It also illustrates the importance of unconventional entrepreneurs in China’s technology development — people who may lack formal credentials but possess acute market instincts and a willingness to take large risks.
In a sector shaped by geopolitics, capital and cutting-edge science, Longsys has shown that timing, strategy and persistence can still carve out space — even for a company that began with little more than a rented stall and a bold idea.
