Ciso Tool
Ciso Tool
Explore our high-precision CNC accessories, luxury custom bezels, and specialized horology materials engineered to sub-micron tolerances.
Established in 2006, Dongguan Ciso Tool Co., Ltd. stands as an authoritative force in the micro-engineering horological sector. We specialize in the end-to-end research, design, and manufacturing of mid-to-high-end watch inlays, structural bezels, movement crowns, and bespoke luxury watch casings.
Over nearly two decades, we have transitioned from a specialized machining workshop into a highly modernized manufacturing ecosystem. Guided by our foundational ethos of "Quality First, Integrity Supreme", we integrate structural diamond setting, high-performance ceramic sintering, and CNC metal machining to serve elite international micro-brands and corporate watch portfolios.
Industrial-scale production backed by rigorous engineering and design control systems.
Our dedicated manufacturing facility relies on advanced machinery to produce components with tight tolerances (±0.005mm).
CNC Machining
High-Precision Assembly
Component Alignment
Waterproof Testing
Multi-station Milling
Multi-station Drilling
Precision Tapping
Precision Wire Cutting
CAM Automatic Lathe
Dongguan is a global hub for precision engineering, providing distinct structural advantages for horological supply chains.
Our facility in Dongguan operates within the world's most concentrated micro-precision engineering cluster. From specialized alloy refineries to sapphire crystal growers, our proximity to upstream suppliers reduces lead times and secures access to premium materials.
We combine high-speed Swiss-type lathes and multi-station milling with local manufacturing processes. This enables us to offer competitive pricing without sacrificing the surface finishes or structural tolerances expected by luxury watch brands.
Our R&D division consists of 60+ engineers specializing in materials science and CNC toolpaths. We process tough materials like grade 5 titanium and sintered ceramics, providing reliable solutions for intricate component designs.
Each material is selected and processed to meet specific performance and aesthetic requirements.
Our ceramic bezel inserts are diamond-polished to a mirror finish. They offer scratch resistance (1500 Vickers) and stability under UV exposure, making them ideal for high-end dive watches.
Used in modern sports watch cases and bezel inlays. We compress high-strength carbon fibers in resin to produce lightweight, structurally sound parts with unique patterns.
We process 18K gold and setting rings for gem-set bezels. Precise CNC channels ensure diamonds and crystals remain securely in place, maintaining a uniform appearance.
How we adapt to shifting global standards in materials and precision engineering.
Demand is growing for multi-colored ceramic watch bezels (such as day/night indicators). Sintering distinct color boundaries within a single ceramic piece requires precise temperature control to prevent stress fractures.
Smartwatches require high-strength connection adapters and lugs. Our components are machined to fit complex smart cases, ensuring standard watch straps connect securely.
With strict EU regulations on skin-contact parts, we utilize FKM rubber, lead-free brass, and low-nickel 316L/904L steel. This ensures all components comply with international safety standards.
We structure our operations to meet the rigorous logistics, quality control, and compliance needs of corporate buyers.
Industrial watch sourcing requires reliable partners capable of handling high-volume demands. We offer key operational advantages for procurement directors:
Addressing key technical and operational questions from global watch brand sourcing managers.
Our CNC machining centers regularly hold dimensional tolerances within ±0.005mm. This precision is critical for press-fit ceramic bezel inserts, ensuring they align correctly without requiring excessive adhesive.
We use high-purity zirconia powders mixed with proprietary metallic oxides. Sintering is conducted in computerized kilns with managed thermal profiles, preventing color shifts across production runs.
Yes. We design and machine crowns and stems compatible with major automatic movements, including the TMI NH34, NH35, NH36, NH38, NH39, and Miyota 9015 series.
We offer fiber-laser engraving and chemical etching for branding on crowns and case backs. Surface finishes include physical vapor deposition (PVD) and diamond-like carbon (DLC) coatings in gold, rose gold, black, and gunmetal.
Explore our selection of specialized crowns, movements, luxury dials, and custom-made strap adapters.
