# China Railway Tunnel Group x Herrenknecht revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Partnership: [China Railway Tunnel Group x Herrenknecht](/partnerships/china-railway-tunnel-group-x-herrenknecht.md)

## Recorded posture

- First recorded event: 2026-08-22
- Last material change: 2026-08-22
- Material event count: 1
- Editorial event count: 0

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date.

_Canonical URL: /partnerships/china-railway-tunnel-group-x-herrenknecht/history. REST: /v1/partnerships/d2fdb759-e7c0-4c8e-aaf3-4ab8a4f0c051/history. HTML: [/partnerships/china-railway-tunnel-group-x-herrenknecht/history](/partnerships/china-railway-tunnel-group-x-herrenknecht/history)._