Ciso Tool
Ciso Tool
Discover our certified collection of mechanical calibers, structural repair tools, and custom sapphire lenses engineered to meet rigorous horological standards.
Founded in 2006, Dongguan Ciso Tool Co., Ltd. is a globally recognized manufacturer specializing in the research, development, and production of mid-to-high-end precision watch components and complete horological system solutions. Formerly operating under an earlier corporate structure, the company has transformed into a modern manufacturing enterprise with highly integrated capabilities spanning industrial design, micro-engineering, and high-tolerance precision manufacturing.
Ciso focuses on the development and production of premium watch accessories, including high-complexity watch dials, cases, straps, buckles, and precious metal components such as 18K gold elements and fine jewelry accents. By providing full ODM and OEM services, we support client brands from initial concept design and physical prototyping to high-volume manufacturing and dust-free cleanroom assembly.
Our operational scale and industrial footprints are built for global enterprise demands:
How globalization, shifting consumer demographics, and industrial supply chain integration are redefining high-end horological service and restoration networks.
Global luxury watch service centers face critical bottlenecks in obtaining original-equipment-manufacturer (OEM) quality replacement components. Traditional Swiss component supply constraints have led to a surge in demand for reliable micro-engineering partners capable of reproducing structural elements—like 316L stems, crowns, and custom bezels—to exact micrometric specifications. Ciso resolves this dependency by providing Swiss-quality fabrication from our high-capacity Chinese facilities.
Modern luxury horology requires sophisticated tracking and branding features. Integrating precise laser engraving technologies, such as our 60W Fiber Laser Marking units, allows service providers, custom modders, and manufacturers to mark serial numbers, internal movement calibers, and anti-counterfeiting micro-features down to 10-micron resolutions. This builds complete traceability throughout the product lifecycle.
Consumers demand high resilience and enhanced aesthetics. We have developed specialized processes for synthetic single-crystal sapphire lenses, 10ATM-rated thin marine-grade 316L stainless steel cases, and copper hands treated with high-yield green and blue photoluminescent pigments. This ensures high structural integrity, supreme water resistance, and superior readability in low-light environments.
Our manufacturing standards align with international watchmaking criteria, assuring high reliability and precise tolerances for watch repair operations globally.
Our facility is equipped with state-of-the-art precision machinery to guarantee consistent component fabrication and complex case machining.
Guided by our core tenet of "Quality First, Integrity Supreme," Dongguan Ciso Tool Co., Ltd. implements rigorous quality assurance (QA) protocols across every phase of production. All precision parts undergo chemical composition analysis, stress-resistance profiling, and dimensional inspections to verify conformity with international horological standards.
By using premium raw materials like marine-grade 316L and 304 stainless steel, synthetic sapphire crystals, and lead-free brass alloys, we ensure complete compliance with global regulatory standards, including Europe's REACH, RoHS, and California Proposition 65. Our products are engineered to withstand prolonged skin contact, resist sweat oxidation, and retain their mechanical and aesthetic properties over long service lifetimes.
Ciso's high-precision components integrate seamlessly into repair, restoration, and customized watchmaking pipelines worldwide.
For independent watchmakers and service workshops specialized in vintage watch preservation, Ciso provides replacement parts like custom-machined 316L crowns, screw lugs, and bezels. Our parts match the exact dimensions of legacy Swiss watches, making it easier to restore high-value watches to functional and aesthetic brilliance.
Emerging boutique watch companies use Ciso's comprehensive design-to-build services. From custom 10ATM-rated turtle cases to sapphire windows and luminous hand modifications for NH35 movements, we provide the flexible, high-precision manufacturing infrastructure that startups need to scale without massive capital investment.
Large-scale repair depots and retail service networks require robust, reliable tools for daily operations. Ciso's bulk spring bar kits, featuring 28 sizes of corrosion-resistant stainless steel pins and ergonomic removal tools, are designed for the intense, high-frequency workflows of professional watchmakers.
To maintain our competitive edge in the global market, Dongguan Ciso Tool Co., Ltd. is continuously upgrading its production capabilities. Our technical roadmap focuses on integrating advanced materials and automation technologies to meet the evolving demands of watchmaking.
Our research and development team actively collaborates with materials scientists to analyze surface friction coefficient optimization on movement stems and crowns. By applying Diamond-Like Carbon (DLC) and Physical Vapor Deposition (PVD) coatings, we significantly extend the wear resistance of critical moving components. This ensures reliable operation and reduces maintenance intervals for end consumers.
Common inquiries regarding watch repair components, materials compatibility, custom OEM services, and batch ordering policies.
A1: 316L stainless steel is a low-carbon, marine-grade alloy that provides excellent resistance against pitting and crevice corrosion, especially when exposed to sweat and saltwater. It is highly biocompatible, meaning it rarely triggers allergic reactions on skin contact, and can be polished or brushed to high aesthetic standards, making it the industry benchmark for high-end watch cases and structural components.
A2: Yes, our custom modifications are precisely engineered for specific movement requirements. For instance, our NH35 movement compatible copper hands are calibrated to fit the exact pinion diameters of NH35, NH36, NH34, 9015, ETA 2824, and ETA 7750 movements. We guarantee strict adherence to hand-fitting specifications to prevent gear drag or movement damage.
A3: We perform both dry air-pressure leak tests and wet hydrostatic-pressure tests. All Ciso dive-rated watch cases, such as our 10ATM thin turtle style case, undergo individual testing to withstand 10 bars of pressure (equivalent to 100 meters depth) before batch packaging, ensuring absolute reliability for aquatic activities.
A4: Absolutely. Utilizing our advanced 60W Fiber Laser Marking machines, we provide high-precision branding, micro-engraving, and serialization on watch casebacks, crowns, buckles, and dial markers. We require proof of trademark ownership or licensing agreements before proceeding with brand marking to protect intellectual property.
A5: For standard catalog items, orders are dispatched within 5 to 15 business days. For customized OEM components—including initial prototyping, tooling development, precision machining, and surface finishing—lead times range from 30 to 45 days, depending on the complexity and volume of the order.
Explore our selection of replacement case parts, precision-cut mechanical stems, and luminous hands designed to simplify professional servicing and component replacements.
