On the afternoon of December 29, 2025, the upward momentum in robot - concept stocks kept intensifying. Both SWANCOR and Kinco skyrocketed to the 20cm daily limit, marking new all - time highs. Prior to this, stocks like Tianqi Automation, Wuzhou New Spring, and ZH Industrial had already reached their daily limits. Meanwhile, Siling Zhiqiu and Dapeng Industrial witnessed increases exceeding 10%.

### Explanation of Optimization - **Title**: The original title is a bit plain. The new title “The Surge in Robot - Concept Stocks Persists, as SWANCOR and Kinco Soar to 20cm Daily Limit and Reach All - Time Highs” uses more vivid verbs like “persist” and “soar”, making it more engaging and descriptive. It also clearly shows the relationship between the overall trend and the performance of the two specific stocks. - **Body**: “upward trend” is changed to “upward momentum”. “Momentum” implies a stronger and more dynamic force, which better conveys the active situation in the stock market. “hitting the 20cm daily limit” is rephrased as “skyrocketed to the 20cm daily limit”. “Skyrocket” is a more vivid and commonly used verb in English to describe a rapid and significant increase. “setting new historical highs” is replaced with “marking new all - time highs”. “All - time highs” is a more standard and frequently used term in the financial field. “Previously” is a bit formal; “Prior to this” is a more natural and commonly used expression in this context. “had also hit their daily limits” is adjusted to “had already reached their daily limits”. “Already” adds a sense of anticipation and the sequence of events. “saw increases of over 10%” is changed to “witnessed increases exceeding 10%”. “Witnessed” gives a more formal and descriptive tone, and “exceeding” is a more precise and commonly used word in financial reporting.