CNC Machined Black-Finished Engineering Plastic Parts For Optical Components

15+ Years of Experience On CNC Machining:

With 15+ years in custom CNC precision machining services, JINGXIN has honed expertise in crafting parts tailored for specialized industries—including CNC machined black-finished engineering plastic parts for optical components. Located in Dongguan City, China, our professional team adopts rational manufacturing processes, targeted solutions, and meticulous workmanship to supply high-quality one-stop custom CNC precision machined parts. These include core black-finished engineering plastic components for optical equipment, as well as parts made of stainless steel, aluminum, iron, and more.

We Focus on:

Custom non-standard CNC precision machining services & milling parts, with a dedicated focus on black-finished engineering plastic parts designed for optical components. These parts—such as optical lens mounts, filter holders, light shield covers, and optical instrument enclosures—leverage the low reflectivity of black finishes (critical for minimizing light interference in optical systems) and the dimensional stability of engineering plastics (e.g., PEEK, PC, POM). Our product scope also covers fittings, valves, hydraulic components, electric motor parts, transmission and pump parts, sprocket wheels, wear parts on packing machines, and electronic and medicinal pieces.

Our Advantage:

1.Advanced Equipment: We operate a world-class facility equipped with a variety of precision CNC machines (Brother, HAAS, Mazak), vertical milling centers, and precision milling and turning lathes (including 3-axis, 4-axis, and 5-axis models). Our CNC machines are optimized for machining engineering plastics—their low-vibration operation ensures tight tolerances (down to ±0.005mm) for optical component parts, while specialized cutting tools prevent plastic deformation (avoiding damage to the black finish). The 5-axis models further support complex geometries, such as curved light shields, which are common in optical equipment.

2.Complete Machining Capability In-House: We adhere to the ISO 2768-F/M machining standard for tolerances, producing parts in a wide range of sizes and complexities—from small black-finished PC lens spacers to large PEEK optical instrument housings. Our in-house capabilities also include post-machining black finishing processes (such as matte black spray coating or integral color molding), ensuring the finish is uniform, scratch-resistant, and meets optical-grade low-reflectivity requirements (typically ≤5% surface reflectivity). Maximum CNC milling capability is detailed in the list below.

3.Raw Material: We guarantee 100% compliance of all materials with RoHS standards and your design specifications. For engineering plastics used in optical components, we select grades with excellent dimensional stability and low outgassing (to avoid contaminating optical elements):

◦ PC: Ideal for optical lens covers, offering impact resistance and easy black finishing;

◦ PEEK : Suitable for high-temperature optical components (e.g., near-infrared equipment parts) with a durable black finish;

◦ POM : Used for precision optical adjustment knobs, with a smooth black surface that reduces friction.

Material certificates, SGS reports, and black finish performance test reports (verifying reflectivity and adhesion) are available upon request. Our material range also includes steel, aluminum, stainless steel, titanium, and other engineering plastics; more details refer to the list below.

1.Order Quantity: We accept orders starting from 1 unit, supporting both short-run precision CNC milling & turning and large-volume production—whether you need a small batch of custom black-finished PEEK filter holders or mass-produced PC optical enclosures.

2.Quick Turnaround: We provide quotes within hours and fast delivery in days, backed by a skilled and professional R&D team. Even for parts requiring custom black finishing (a key step for optical use), we streamline the workflow to avoid delays, ensuring your optical equipment production stays on schedule.

3.Our Customers: Our customers are from the EU and North America, many of whom are leading optical equipment manufacturers. They rely on our black-finished engineering plastic parts to maintain the precision and performance of their optical systems—from industrial spectrometers to medical imaging devices.

Quality Assurance:

What we do to ensure you receive high-quality parts from JINGXIN: We declare here that we will be responsible for our precision machined parts at all times, especially for black-finished engineering plastic parts for optical components (where finish quality and dimensional accuracy directly impact optical performance).

1.100% inspection before shipping: For black-finished engineering plastic parts, we conduct specialized tests—including reflectivity measurement (using a spectrophotometer), finish adhesion testing (cross-cut test), and dimensional inspection (with a coordinate measuring machine). An inspection report for each piece of precision CNC milling part (with detailed data on black finish performance for optical components) is available. We implement ISO quality control throughout the entire production process, from engineering plastic material inspection to black finishing.

2.We have served Volvo Auto Corp since 2016 as an approved precision CNC milling company in China (supplying high-precision auto parts), and we also have a 6-year+ track record of partnering with EU-based optical equipment brands—providing black-finished engineering plastic parts that meet strict optical industry standards, with no complaints so far.

3.In case any precision machined part (including black-finished engineering plastic parts) is outside tolerance, fails to meet your optical performance requirements (e.g., excessive reflectivity), or has a defective black finish, we will remake and deliver them as fast as we can, 100% free of charge.

4.Over the past years, JINGXIN CNC Milling Company has manufactured thousands of precision CNC machined components for our customers—including tens of thousands of black-finished engineering plastic parts for optical components. The 99.9% satisfaction feedback (especially regarding the low reflectivity and dimensional stability of our optical parts) drives us to supply more quality precision machined parts to meet customer requests.

JINGXIN was founded in 2015 to serve the growing market of Custom CNC machining parts for the Automotive industry, Car production line special equipment market, primarily for Industry, Power generation, Automotive equipment, Lightning, Appliances, Medical equipment and Tool sector. JINGXIN Offer its professional CNC manufacturing services (CNC machined parts) to top-rated international clients, primarily for export to the USA and EU countries. JINGXIN has been able to maintain, expand and diversify its prestigious international clients with its excellent quality of products. JINGXIN is located in Dongguan China. Which is named world-class manufacturing city. With a factory of over 2000 square meters.

we are trusted by most famous clients such as BMW(Germany), VOLVO (Sweden), NFL(USA), etc.

150+ skilled workers inside, especially 20+ experienced engineers, as well as well-trained international sales staff, they are combined into a team group one by one. All of your project’s details & questions can be quickly and professionally feedback.

JINGXIN offers three main manufacturing processes:

3/4/5 Axis CNC milling services   (CNC machining work range maximum 2000.00 with accuracy +/-0.001mm)

CNC turning services 

Customized manufacturing per design (sheet metal, welding, assembly.etc )

JINGXIN Advantage & Clients Benefits

• Increase your production levels with more competitive costs. By adopting advanced CNC machines, other equipment, and ISO 9001 quality control system, you control costs and turnaround times, and you can also afford some flexibility as opposed to outsourcing the work.
• Meet the needs of your industry. For that reason, our high-quality custom manufacturing services produce outcomes that apply to industrial standards.
• No need for more vendors or outsourcing. We are your one-stop-shops for CNC Rapid Prototyping, Vacuum Casting, CNC Machining services, Plastic injection molding and Tooling, Sheet Metal Fabrication etc.
• Short-run production or 10000+ production. Applications include parts for Auto parts, medical, industry.
• Typical tolerance range from +/- 0.01mm-0.05mm;
• The Fast lead time within 10-15 working days.