The renovation technique for Beijing Qing Stone, although it is a green, mid-range architectural decorative material, it can undergo deterioration over time due to pollution from various impurities in the air or other sources of contamination, leading to rust spots and affecting the appearance and quality of the stone. When there are excessive rust spots on the surface of Beijing Qing Stone but no other deterioration, it may seem wasteful to replace it entirely. In such cases, the renovation technique for Beijing Qing Stone can be a viable option.

One, seal all the gaps in the Qing Stone from Peking University with a gel material, as the Qing Stone is highly reactive to water. Failing to properly waterproof during renovations can easily lead to further damage to the Qing Stone.

Prior to the renovation, a highly penetrating alkaline oil-based protective agent is applied to the Beidaqing stone for deep protection. This ensures that no moisture enters the Beidaqing stone even if the adhesive does not fully seal, preventing secondary damage to the Beidaqing stone.

During the renovation of Beijing Qing Stone, it is crucial to promptly remove moisture to prevent it from seeping into the stone, which could lead to renovation failure. Later, when performing the mirror finishing on the Beijing Qing Stone, ensure the surface is completely dry before proceeding to achieve optimal renovation results.

Refurbished Qing Stone from Peking University Qingyuan enhances its surface quality by removing a series of rust spots, thereby improving its appearance and extending its service life.