---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/100000000779513.md"
description: "Rumor: China CCL giant Kingboard notified clients it plans to hike prices 15% on FR-4 and Prepreg, and on CEM-1/22F 10%, due to the rising cost of materials like E-glass fabric and copper foil, while copper foil processing fees will also rise, media report. Prepeg is a bonding material used in multilayer circuit board lamination (AI server boards layers are rising: Blackwell GPU boards 28-34-layers vs Vera Rubin 32-40 or more, versus a general purpose server board’s 8-12 layers).Source: Dan Nystedt"
datetime: "2026-07-07T05:35:40.000Z"
locales:
  - [en](https://longbridge.com/en/topics/100000000779513.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/100000000779513.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/100000000779513.md)
author: "[AI Gossip](https://longbridge.com/en/profiles/17581203.md)"
generator: "portal-rs"
---

# Rumor: China CCL giant Kingboard notified clients …


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---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**