Sanluo Precision is a professional machining manufacturer and supplier based in China. Leveraging a scientific ERP-based production management system and the ultra-precision machining capabilities of its own facilities, the company provides global clients with comprehensive, one-stop custom machining services—including turning, milling, drilling, boring, and grinding. We specialize in the custom fabrication of complex and challenging parts. With years of accumulated technical expertise—ranging from traditional machine tools to advanced CNC equipment, and from standalone operations to automated production lines—the company consistently upholds a spirit of craftsmanship dedicated to excellence. We supply high-quality machined parts and metal components to industries such as aerospace, scientific research, medical devices, optical communications, and electronic communications.
As a leading domestic machining manufacturer, Sanluo Precision’s operations span multiple domains, including CNC machining, general parts fabrication, EDM wire cutting, standard EDM machining, and semiconductor precision processing. Our products are widely utilized across core industries such as automotive manufacturing, medical devices, aerospace, consumer electronics, and semiconductors. The company demonstrates exceptional machining precision: mechanical machining achieves a maximum dimensional tolerance of ±0.0005mm and a surface roughness as low as Ra0.05µm; CNC machining reaches a precision of 0.001mm; and both EDM and wire-cutting processes achieve a maximum precision of 0.001mm—meeting the high-precision requirements of diverse industries. Regarding material processing, the company handles standard materials such as steel and aluminum, while also successfully overcoming the processing challenges associated with specialized materials like titanium alloys and PEEK. We possess extensive experience specifically in the fabrication of titanium components, offering customized processing services tailored to the unique needs of various sectors.
In terms of equipment and technology, the company operates over 130 pieces of high-precision machining equipment, alongside multiple inspection devices such as CMMs (Coordinate Measuring Machines). We have mastered advanced processes including multi-axis simultaneous machining, high-speed cutting, lithography, and EDM forming. This enables us to fabricate a wide variety of parts—including those with complex 3D contours, irregular-shaped holes, and thin-walled structures—while ensuring short lead times for the delivery of small-batch prototypes. Regarding quality control, the company has established a comprehensive management system supported by dedicated teams of PQE (Product Quality Engineers) and QC (Quality Control) professionals; every part undergoes rigorous inspection prior to delivery to ensure consistent product quality and reliability. Furthermore, the company possesses well-established capabilities in areas such as CNC boring, precision CNC machining for semiconductors, and wire electrical discharge machining (EDM). We offer comprehensive, end-to-end services—ranging from material selection, process design, and manufacturing production to inspection and shipment—and are dedicated to providing clients across various sectors with optimal machining solutions and high-quality service.
In terms of both breadth and depth, Sanluo Precision’s manufacturing facility features a comprehensive and clearly structured array of machining capabilities. Regarding turning, we are equipped with conventional lathes, CNC lathes, and turn-mill centers. We can process parts with diameters ranging from approximately φ0.1 mm to φ200 mm and lengths from 0.1 mm to 800 mm, covering a wide range of rotational components such as shafts, discs, and sleeves. Our turning precision reaches IT1–IT6 grades, with roundness controlled to within 0.002 mm and surface roughness controlled between Ra 0.05 μm and 1.6 μm—ideal for high-demand machined parts and mating components. Regarding milling, we utilize vertical, horizontal, and CNC milling machines capable of processing flat surfaces, grooves, gears, cams, and complex contours. This enables the stable manufacturing of both structural components and mold parts, achieving milling precision within the IT1–IT7 range, with strict control metrics for both flatness and positional accuracy. Regarding boring, utilizing horizontal boring machines, jig borers, and CNC boring-milling centers, we focus specifically on the precision machining of hole systems within core structural and functional components; our coaxiality and fit tolerances consistently meet the rigorous standards required for high-level assembly. Regarding grinding, our capabilities—comprising external cylindrical grinding, internal cylindrical grinding, and surface grinding—serve as our final finishing stage. These processes are applied to critical journals, bore diameters, and flat surfaces, ensuring that all high-precision machining requirements can be fully resolved within a single, integrated facility.
For procurement professionals prioritizing consistent quality, the management of cutting tools and fixtures serves as a crucial indicator when evaluating the professionalism of a machining company. As a manufacturer specializing in precision machining, Sanluo Precision has established a comprehensive tool lifecycle management system. This system utilizes digital technology to manage every stage of a tool's life—from selection, procurement, and warehousing to presetting, usage, resharpening, and eventual disposal—and is supported by long-term partnerships with numerous international tool brands. Based on specific material properties and process requirements, we select coated carbide tools for steel components; employ high-helix-angle tooling solutions for aluminum alloys; and utilize specialized, wear-resistant tool combinations for titanium alloys and other difficult-to-machine materials. This approach ensures an optimal balance between machining efficiency and tool longevity for all machined metal parts. Internally, the company has built a robust tool parameter database, aggregating extensive data on geometric specifications, cutting parameters, and material compatibility.
Furthermore, we employ advanced tool presetting instruments to perform precise measurements of tool length, diameter, and runout (achieving an accuracy of up to 0.001 mm), thereby minimizing tool installation errors. Regarding fixturing, Sanluo Precision has independently designed and developed hundreds of sets of specialized, universal, and modular fixtures. These systems—integrated with hydraulic and pneumatic clamping mechanisms—enable rapid positioning and secure clamping, making them particularly well-suited for high-volume custom machining services and contributing significantly to enhanced dimensional consistency and production cycle stability.
A machining company must do more than simply deliver parts successfully according to technical drawings; it must also establish quantifiable advantages in terms of efficiency and continuous improvement. Sanluo Precision has implemented Lean Manufacturing principles within its production facilities, utilizing a "Single-Piece Flow" system to reduce work-in-process (WIP) inventory and shorten lead times. We employ the "5S" methodology (Sort, Set in Order, Shine, Standardize, Sustain) to cultivate a clean, organized, and efficient mechanical machining environment. Concurrently, we have established a continuous improvement mechanism that encourages employees to submit improvement proposals; through the annual execution of numerous process and workplace optimization projects, we have achieved demonstrably significant improvements in actual production efficiency.
To date, the company has provided custom machining services to a diverse range of industries—including aerospace, scientific research, medical devices, optical communications, and electronic communications—processing tens of thousands of distinct part types and serving a client base comprising thousands of companies. From simple parts to complex assemblies—and ranging from single-piece prototypes and small-batch trials to large-volume production—Sanluo Precision has leveraged its comprehensive machining capabilities, standardized management systems, and consistent product quality to cultivate an identity as a Chinese manufacturer and supplier defined by the principle: "Data as the Benchmark, Delivery as the Proof." In doing so, we provide our global clientele with machining services and a foundation for collaboration that inspire long-term trust.
