Ciso Tool
Ciso Tool
Engineered to exceed strict European standards of quality, biocompatibility, and structural integrity.
The global watch industry is experiencing a massive paradigm shift. No longer restricted to mere timekeeping devices, watches have evolved into complex symbols of personal identity, luxury art, and wearable computing technology. At the structural core of this development is the watch housing. As watch housings serve to shield delicate movements from external shocks, moisture, and electromagnetic interference, the demands placed upon factories have escalated dramatically.
In the modern B2B watch ecosystem, European and international watch brands require strict material conformity, precise dimensions, and structural resilience. Key standards such as CE certification have transitioned from basic regulatory tickboxes to non-negotiable proof-points of manufacturing competence. For watch housings exported to the EU, compliance ensures that materials do not leach harmful elements (such as nickel under EN 1811) and that structural claims like water resistance (under ISO 22810) are fully validated.
Using premium 316L/904L stainless steel, titanium, and 925 sterling silver to eliminate hypoallergenic risk, in strict adherence to REACH regulations.
Tolerance control within ±0.005mm to ensure seamless integration of mechanical movements, sapphire crystals, and sealing gaskets.
Proprietary double-shoulder and single-shoulder sealing technology that withstands multi-atmospheric pressure for divers and chronographs.
Three dominant trends are defining the future of premium watch casing manufacturing. First is the hybridization of materials. Leading factories are combining lightweight carbon fiber, high-hardness ceramics, and premium sapphire crystals with titanium steel bases to produce ultra-durable, highly aesthetic components. Second is the integration of micro-electronics. Smartwatch casings require specialized internal pockets, antenna windows, and precise sensor interfaces, all machined from non-magnetic materials like aerospace-grade ABS or high-purity titanium. Third is sustainability. Global brands are demanding that exporters map their supply chains, emphasizing recycled metals and low-emission finishing techniques such as environmentally-friendly physical vapor deposition (PVD).
Founded in 2006, Dongguan Ciso Tool Co., Ltd. is a professional manufacturer specializing in the research, development, and production of mid-to-high-end precision watch components and complete watch solutions. Formerly operating under an earlier corporate structure, the company has grown into a modern manufacturing enterprise with strong integrated capabilities across design, engineering, and precision production.
The company operates an independent industrial facility covering over 20,000 square meters and employs more than 500 skilled staff members, including a dedicated R&D team of over 60 professionals. With advanced production equipment, strict quality control systems, and experienced technical personnel, Ciso is committed to delivering high-precision, high-consistency products for global watch brands.
Ciso focuses on the R&D and manufacturing of premium watch accessories, including watch dials, watch cases, watch straps, watch buckles, and precious metal components such as 18K gold watch parts and fine jewelry accessories. In addition, the company provides full ODM and OEM services, supporting complete watch customization from concept design and prototyping to mass production and assembly.
Guided by the principle of “Quality First, Integrity Supreme,” Ciso emphasizes excellence in every production process. The company implements rigorous quality assurance protocols, ensuring that each product meets international standards for durability, precision, and aesthetic refinement.
Through consistent quality and reliable service, Dongguan Ciso Tool Co., Ltd. has established long-term partnerships with well-known domestic brands and continues to expand its presence in global markets. The company is committed to honest cooperation, mutual growth, and long-term value creation with international watch brands, striving to elevate the artistry and innovation of modern watchmaking.
Our structured pathway to pushing the limits of durability, finish, and structural integration.
Whether you are launching a micro-brand crowdfunding campaign or scaling a multi-million-dollar retail operation, our production systems adapt to your supply chain requirements. We categorize our primary watch housing outputs into three distinct, specialized channels:
Specializing in 18K solid gold, 925 sterling silver housings, and pavé diamond/moissanite setting techniques with VVS clarity stones that pass standard thermal testers.
Utilizing high-tensile titanium alloys, scratch-resistant ceramics, and optical-grade single-crystal sapphire crystals to withstand intense depths and mechanical stress.
Supplying critical accessory sub-assemblies, including spring bar pins, custom lug screws, crowns, winding stems, and specialized automotive grade gaskets.
Our manufacturing philosophy focuses on eliminating the common quality issues found with lower-tier exporters—such as misaligned lug drill holes, stripping crown threads, and degraded water gaskets. By applying rigorous aerospace-standard quality loops (FMEA) to standard horological assembly, Ciso delivers parts that integrate seamlessly with Swiss and Japanese movement suppliers (such as ETA, Sellita, Miyota, and Seiko).
Answering the most critical procurement, logistics, and material compliance questions from international buyers.
CE certification ensures that the metallic components, particularly watch cases and backs that come into direct contact with human skin, do not pose a toxicological hazard. Under EU REACH regulations and specific standards like EN 1811, watch components must show nickel release rates below 0.5 µg/cm²/week to prevent contact dermatitis. Additionally, for smartwatches with electrical properties, CE markers cover safety directive compliance for battery and charging modules.
316L stainless steel contains molybdenum, which drastically improves its resistance to pitting corrosion in chloride environments (such as sweat and ocean saltwater) compared to 304L. It is highly biocompatible and can be polished to a mirror-like finish or brushed without exposing microscopic voids, making it the industry standard for mid-to-high-end watch brands.
Every watch case undergoes static pressure and vacuum testing inside our modern QC laboratory. Using advanced Swiss-made dry testing machines and water pressure chambers, we verify integrity up to 5, 10, or 20 atmospheres (50m to 200m). Specialized synthetic rubber gaskets (fluorocarbon or nitrile) are fitted to ensure long-term resistance to aging and thermal shocks.
Yes. We offer diamond paving services using genuine VVS Moissanite or certified diamonds. Our setting team handles hand-prong or pavé settings that pass electronic diamond tester verification. Using CAD/CAM modeling, we ensure the structural thickness of the watch bezel or case remains intact, keeping the housing fully sealed against dust and water.
OEM parts, precision micro-components, and movements designed for watchmakers worldwide.
