We welcome all clients who prioritize spatial quality. Whether it is a private residence or a large-scale commercial development, we provide the same level of professional service and technical rigor.

Yes. Beyond our curated collection, we offer a "Material Matching Program." If you provide a stone sample or specification, we will source and custom-manufacture handles to align with your project’s aesthetic.

Due to the meticulous selection of natural stone and the precision required for our mortise and tenon drilling, standard orders typically ship within 4–6 weeks. Custom projects may require additional time.

Yes. For developers, hotels, or architectural firms managing bulk procurement, we offer project-specific commercial terms. Please contact service@abc-stone.com with your project schedule for a quote.

Each piece of natural stone is a unique work of nature. Unless there is a structural defect, we do not accept returns based on natural veining variations. We recommend contacting us for photos of the current material batch before finalizing your order.

On the contrary. The complexity is handled in our factory. For the installer, this design provides a standardized, high-precision fit that is more stable and reliable than traditional adhesive-based methods.

We carefully engineer the volume of each stone element. While slightly heavier than hollow metal handles, they are well within the weight capacity of high-quality, standard hinges. We provide recommended hinge specifications upon request.

Our mortise and tenon process specifically addresses this. We engineer micron-level expansion gaps at the interface to accommodate the different thermal expansion rates of stone and metal, ensuring structural integrity in any climate.

Yes. Our designs are engineered to be compatible with most major European and American standard lock bodies. Our team will verify your lock specifications during the ordering process to ensure a perfect fit.

We provide comprehensive technical guides and "step-by-step" video tutorials. If your project requires specific oversight, we can arrange a remote video consultation with your contractor.

We use custom-engineered, shock-absorbent molds. Each piece is housed in its own protective chamber, ensuring it arrives in pristine condition regardless of the shipping distance.

Please email site photos and a description of the issue to service@abc-stone.com. Our technical engineering team typically responds within 24 hours with a solution.

Yes. Our designs are engineered to be compatible with most major European and American standard lock bodies. Our team will verify your lock specifications during the ordering process to ensure a perfect fit.

Natural stone is porous and will subtly absorb oils over time. This process creates a unique "patina" that adds character and warmth to the material, a feature highly valued in long-term architectural spaces.

We provide a 10-year warranty on all metal structural components and lifetime technical support for our mortise and tenon connection integrity.

Minor surface wear can be treated with the maintenance paste included in your order. For deeper damage, the solid metal components can be professionally re-brushed or polished.

Blot immediately with a dry cloth. For stubborn stains, use a pH-neutral stone cleaner. Never use acidic household cleaners, as they can etch the natural stone surface.

ABC–STONE rejects "seasonal" design. Our core collection is permanent. We ensure that our classic models remain in production or archived so that you can source authentic parts for decades to come.