Hubei Dinglong

In 2000, Dinglong was founded by brothers Zhu Shuangquan and Zhu Shunquan after leaving their jobs at a Hubei state-owned enterprise.^[2]

When Dinglong was established, Shunquan who had previous experience as department manager at a Wuhan chemical company served as the supervisor its chemical and materials business. He later became CEO of Dinglong in 2008.^[2]

In 2010, Dinglong held its initial public offering and became a listed company on the Shenzhen stock Exchange.^[2]

As early as 2012, Dinglong began focusing on the semiconductor materials business. Each year, 12% of its total revenue went to research and development.^[3]

In December 2023, Dinglong announced plans plans to invest ¥804 million to build a factory in Qianjiang that makes KrF and ArF photoresists which are crucial light-sensitive materials needed in the production of advanced integrated circuit chips.^[4] In December 2024, Dinglong announced that its KrF and ArF photoresists passed customer evaluations and received orders from two domestic wafer manufacturers, totaling over ¥1 million. It achieved this by customizing monomer and resin structures and enhancing processes like purification and mixing, which enabled a fully localized production process covering both materials and final products.^[5]

In April 2025, Dinglong announced its CMP pads have been supplied in small batches to a manufacturer.^[3]