# Shanghai Tongchuang Purun New Materials Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/shanghai-tongchuang-purun-new-materials-co

- Industry: Materials
- Headquarters: Shanghai, China
- Website: www.goldenwin.com/
- Latest round: Angel (Aug 23, 2022)
- Investors on record: 1

## About

Founded in 2021 and based in Shanghai, China, Shanghai Tongchuang Purun New Materials Co., Ltd. was established by Dr. Yao Lijun, founder and Chief Technology Officer of Jiangfeng Electronics, together with a team of overseas returnee experts. The company began with the research and development of ultra-high-purity aluminum, tantalum and copper and has grown into a leading domestic producer of high-purity (5N–6N) metals for semiconductor manufacturing. Over the past decade, it has built a fully independent industrial chain and entered the global supply networks of top-tier wafer fabs. Its materials are used in advanced semiconductor processes, including 3-nanometer chip production. In October 2025, the firm closed a round of pre-IPO funding.

The company produces a range of high-purity and ultra-high-purity metal materials, including aluminum, copper, tantalum, manganese and advanced aluminum alloys. The company’s independently designed equipment and processing technology allow it to maintain high quality and scalability, ensuring reliable supply to major chip manufacturers worldwide.

The company generates revenue primarily through the production and bulk sale of metals to integrated circuit manufacturers, display panel producers and advanced equipment makers. It operates under long-term supply contracts and collaborative development agreements with downstream partners, particularly in the semiconductor materials sector.

Following its latest Pre-IPO funding round, the company plans to accelerate technology upgrades, expand production capacity, and enhance its R&D infrastructure. It aims to consolidate its leading position in high-purity metals, increase international market penetration and extend its aluminum alloy technology to new applications, including lightweight automotive components.

## Funding rounds

- Angel, Aug 23, 2022 — Greenriver Capital

## Investors

- Greenriver Capital (https://capitalatlas.ai/funds/greenriver-capital) — Angel