Ciso Tool
Ciso Tool
In the field of high-precision watchmaking, dimensional stability and micron-level tolerances are not just specifications—they are the line between failure and masterpiece.
A watch plate holder (frequently referred to in professional horological manufacturing as a movement mainplate fixture or caliber assembly jig) is the foundational support mechanism utilized during the CNC milling, drilling, engraving, and hand-assembling of mechanical calibers. It is designed to secure delicate plates, bridges, and balances without causing surface distortion, micro-scratches, or axial misalignment.
At Dongguan Ciso Tool Co., Ltd., we recognize that as automatic movements—such as the standard NH35, high-beat SW200, or multi-timezone NH34—become increasingly complex, the demands on holding fixtures grow exponentially. Our research shows that over 40% of micro-mechanical failures in movement calibration are directly caused by clamping stress or minor component shifting during production. By engineering customized, ultra-stable watch plate holders, we mitigate these risks, ensuring high yield rates and smooth workflow integration for our clients worldwide.
Precision-milled retaining jaws distribute pressure evenly, preventing mainplate warping or critical damage to jewel bushings and pivot holes.
Our tooling achieves positioning repeatable tolerances down to ±0.003mm, aligning gears, bridges, and balance wheels perfectly.
Constructed using Grade 5 Titanium and premium stainless steel alloys to withstand harsh cleaning agents and synthetic horological lubricants.
Dongguan Ciso Tool Co., Ltd. was founded in 2006 and 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.
Company Founded
Modern Facility Area
Skilled Personnel
Expert R&D Engineers
From prototype calibration to high-volume assembly lines, we optimize production tooling for global horological ecosystems.
For independent watchmakers and premium brands crafting in-house movements, we engineer custom brass and titanium watch plate holders. These fixtures are tailor-made for delicate perlage, Geneva stripes (Côtes de Genève), and hand-bevelling operations, ensuring no metal-on-metal friction alters the surface finish.
Modern factories assembling mainstream movements (such as NH35, NH36, or 9015) rely on fast, high-volume production. Ciso manufactures automated watch plate holders featuring pneumatic clamp interfaces and magnetic centering arrays, seamlessly integrating with robotic pick-and-place systems and automatic oil-dosing machines.
The global modding community and professional service centers demand versatility. Ciso’s universal adjustable watch plate holders adapt to a variety of mechanical movements, offering multi-angle articulation, protective silicone pads, and lockable positioning gears for secure repairs.
During the design phase of new mechanical calibers, R&D teams require temporary jigs that accommodate variations in prototype plates. We design specialized, modular watch plate holders featuring adjustable micro-pins that adapt to shifting bridge layouts and mounting points.
The global watchmaking industry is experiencing a significant shift. While mechanical movements maintain their prestigious status, the adoption of advanced automation, CNC high-speed milling, and modern metallurgical science has redefined how movements are constructed. This progression has intensified the demand for ultra-precise tooling like watch plate holders, micro-clamping systems, and automated alignment jigs.
In traditional watchmaking hubs such as Switzerland (Jura Region), Germany (Glashütte), Japan, and the manufacturing clusters of Dongguan and Shenzhen, precision fixtures play a critical role in standardizing production. High-speed CNC spindles operate at speeds up to 40,000 RPM, requiring tooling that can absorb vibrations and maintain positional accuracy down to the sub-micron level.
Additionally, the rapid expansion of the smartwatch market—which incorporates complex hybrid movements, smart rings, and wearable sensors (such as our Pensvox Smart Rings)—requires advanced micro-assembly solutions. Our manufacturing process combines traditional watchmaking precision with modern IoT device assembly requirements to meet these evolving challenges.
Take an inside look at our advanced manufacturing floor, where 500+ professionals leverage cutting-edge machinery to deliver exceptional horological tools.
Delivering high-precision watch components globally while meeting the strictest international standards.
Our engineering processes align with Swiss Horological Industry Standards (NIHS), ensuring our tools meet the specific requirements of Swiss watch manufacturers.
All alloys, stainless steel, and titanium components are certified non-toxic and compliant with environmental standards, preventing surface contamination.
We operate shipping hubs to provide rapid delivery to major watchmaking regions worldwide, supported by remote engineering and design assistance.
To reduce tool weight and minimize contact wear, Ciso is developing watch plate holders crafted from specialized PEEK (Polyether Ether Ketone) composite materials. These materials provide exceptional stiffness and thermal stability while protecting delicate movement coatings.
Future assembly lines require automated inventory and configuration tracking. Our next-generation watch plate holders will feature integrated RFID tags, enabling manufacturing systems to automatically identify movement models and adjust assembly parameters.
By leveraging high-entropy alloy (HEA) coatings on structural points, we aim to increase tool life and wear resistance. This technology ensures long-term accuracy under continuous use on automatic production lines.
