# Sidike subsidiary plans RMB 1.652B expansion of BOPET base film in Sihong, Jiangsu

Jiangsu Xingyuantai New Material Technology Co., Ltd., a wholly-owned subsidiary of Jiangsu Sidike New Materials, plans to invest RMB 1.652 billion to expand production of 103,000 tons of high-end functional BOPET base film in Sihong County, Jiangsu. The project was approved by the board on 22 September 2026 and has a construction period of 1.5 years.

- Type: Expansion
- Announced: 2026-09-22
- Where: Sihong County, Suqian City, Jiangsu Province, China
- Value: $227.0M (1.65B CNY)
- Status: announced
- Capacity: 103,000 tons per year of BOPET base film
- Products: high-end functional BOPET base film, MLCC release film base film, polarizer release and protective film base film, photosensitive dry film base film, window film base film
- Sectors: [Plastics and Polymers](https://endata.com/sectors/plastics-polymers.md)

## Companies

- [Jiangsu Sidike New Materials Science & Technology Co., Ltd.](https://endata.com/companies/94301.md)
- [Jiangsu Xingyuantai New Material Technology Co., Ltd.](https://endata.com/companies/94302.md)

## Sources

- [en.wedoany.com](https://en.wedoany.com/shortnews/481840.html), 2026-09-24: "Jiangsu Sidike New Materials Science & Technology Co., Ltd. announced that its wholly-owned subsidiary, Jiangsu Xingyuantai New Material Technology Co., Ltd., plans to invest in and construct an expansion project with an annual output of 103,000 tons of high-end functional BOPET base film in Sihong "

---
Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.