بيت / Custom Precision Manufacturing
CUSTOM METAL & PLASTIC COMPONENTS · DONGGUAN, CHINA
Precision metal and plastic components. From your first prototype to repeat production.
TOPS Precision supports engineering teams worldwide with CNC machining, يموت الصب, sheet metal fabrication and plastic injection molding under one manufacturing partner.
Upload STEP / سان تومي وبرينسيبي / إيجيس / قوات الدفاع الشعبي / DWG files
Engineering review and DFM support available.
One partner. Four manufacturing routes.
Choose the process around geometry, تسامح, مادة, quantity and total program cost. Start with the capability you need—or send your drawings for an engineering review.
Precision milling and turning for complex metal and plastic parts, النماذج الأولية, fixtures and end-use components.
Repeat production of aluminum, zinc and magnesium components when geometry, alloy and volume justify tooling.
يقطع, bent and formed metal parts for enclosures, إطارات, covers and assemblies.
Tooling and thermoplastic molding for engineering validation, pilot builds and repeat production.
TOPS Precision is a custom precision manufacturing company in Dongguan, الصين, providing CNC machining, يموت الصب, sheet metal fabrication and plastic injection molding for metal and plastic components from prototype through production.
*The ±0.005 mm capability is feature- and process-specific. Critical dimensions are confirmed during quotation; it is not a blanket tolerance for cast, formed or molded parts.
The facts, in one place
| القدرة | TOPS Manufacturing Range |
|---|---|
| عمليات التصنيع | التصنيع باستخدام الحاسب الآلي, يموت الصب, sheet metal fabrication and plastic injection molding |
| CNC axes and methods | 3-محور, 4-axis and 5-axis machining; تحول, دورة الطاحونة, EDM and grinding subject to feature review |
| CNC tolerance | Down to ±0.005 mm for suitable features, geometry and materials; acceptance criteria agreed before manufacture |
| حجم الإنتاج | النموذج الأولي, pilot build, low-volume batch and repeat production; quantities quoted per project |
| المعادن | الألومنيوم, الفولاذ المقاوم للصدأ, فُولاَذ, نحاس, نحاس, titanium and selected advanced alloys |
| البلاستيك | عضلات المعدة, الكمبيوتر, بوم, نظرة خاطفة, نايلون, ص, PMMA, PTFE and other suitable grades |
| تقتيش | سم, القياس البصري, micrometers and gauges; XRF for suitable alloy-composition screening |
| توثيق | فاي, تقارير الأبعاد, شهادات المواد, RoHS documentation and CoC as specified |
| التشطيب السطح | أنودة, أنودة صعبة, تصفيح, التخميل, طلاء مسحوق, electropolishing and polishing |
| العمليات الثانوية | إزالة الأزيز, المعالجة الحرارية, hardware installation and assembly operations as agreed |
| Quality system | ايزو 9001:2015 |
| تنسيقات الملفات | خطوة, سان تومي وبرينسيبي, إيجيس, X_T, المحكمة الخاصة بلبنان, DWG, DXF and PDF |
Material grades, part envelope, tooling scope, lead time and inspection coverage are confirmed against your drawing and order requirements.
Keep the program moving
Your manufacturing route can evolve as a design matures. We review what must stay consistent—and what should change—between development, pilot builds and repeat production.
Evaluate fit, assembly and function before committing to production tooling.
Manufacturing route: CNC machining and suitable rapid manufacturing routes. Test material and process should reflect the intended evaluation.
Build the quantity you need while designs, demand or production tooling are still developing.
Manufacturing route: التصنيع باستخدام الحاسب الآلي, soft tooling where suitable and other project-specific methods. Tooling investment is assessed against unit cost.
Move approved designs into a repeatable manufacturing program.
Manufacturing route: يموت الصب, injection molding or optimized machining, selected around the part, annual demand and approved quality plan.
الهندسة. مادة. كمية. يكلف.
Engineers review geometry, التسامح, مادة, الكمية السنوية, surface requirements and target cost before recommending a manufacturing route.
| Your requirement | Process to evaluate | Why it may fit |
|---|---|---|
| Complex precision metal prototype | التصنيع باستخدام الحاسب الآلي | Limited tooling investment; direct access to 3D geometry and drawing-defined features. |
| Tight-tolerance low-volume parts | التصنيع باستخدام الحاسب الآلي | Critical features can be machined and inspected individually. |
| Repeat aluminum housing | يموت الصب + الآلات الثانوية | Evaluate alloy, مسودة, سمك الجدار, tool cost and volume. Machine critical interfaces after casting. |
| Thin metal enclosure | تصنيع الصفائح المعدنية | Use cut patterns, ينحني, welds and hardware to create a functional assembly. |
| Repeat thermoplastic enclosure | صب الحقن | Review resin, uniform walls, مسودة, بوابات, shrinkage and tooling investment. |
| Cylindrical or rotational component | تحول باستخدام الحاسب الآلي / دورة الطاحونة | Rotational features suit turning; cross-features may require additional milling. |
| Complex multi-sided geometry | 5-محور CNC الآلات | Can reduce setups or improve cutter access when the part and fixture support it. |
These are starting points for DFM, not automatic process assignments. يضعف, accessible datums, wall thickness and inspection requirements may change the route.
CONTROL THE FEATURES THAT MATTER
Precision depends on part geometry, مادة, feature size and manufacturing method. TOPS supports tolerances down to ±0.005 mm for suitable CNC-machined features.
Critical dimensions are reviewed during quotation and verified using an agreed inspection method. التشطيب السطح, heat treatment and assembly conditions are considered before dimensions are finalized.
For suitable CNC features. Confirmed by drawing review.
3-, 4- و 5 محاور الآلات, with access and workholding reviewed.
سم, القياس البصري, micrometers and gauges selected for the feature.
Dimensional reports, FAI and material certificates as specified.
Datum scheme, sampling and measurement conditions agreed before production.
Documented checks. Defined acceptance.
TOPS operates an ISO 9001:2015 نظام إدارة الجودة. Inspection planning connects the drawing requirements to checks at each stage of manufacturing.
Tell us which dimensions are critical, which reports you need and how the parts will be used. A clear inspection plan makes acceptance criteria visible before the first part is made.
Dimensional verification selected around the part and drawing requirements.
Review material grade, condition and traceability. Material certificates and incoming checks are specified by the purchase requirements. XRF can support alloy screening where appropriate.
Check the first manufactured parts against the drawing and critical characteristics before releasing the approved production route. Agree the FAI format and sample quantity in advance.
Monitor key dimensions at defined manufacturing stages. Checks are selected around process risk, أداة ارتداء الأداة, stability and the features that cannot be verified after assembly.
Verify agreed characteristics using CMM, الأنظمة البصرية, مقاييس, micrometers or other suitable equipment. Specify whether sampling or full inspection is required.
فاي, dimensional inspection reports, شهادات المواد, RoHS documentation and CoC are available as agreed. Specify the required standard and traceability level at RFQ stage.
Select packaging around surface protection, cleanliness and transport requirements. Shipping documents and identification are checked against the approved order.
100+ معدن & plastic options
Select the exact grade around performance, بيئة, manufacturing method and cost. Material families alone are not enough to define a part.
Wrought grades and casting alloys are selected for different processes. A356 is evaluated for suitable casting routes; it is not treated as an interchangeable pressure-die-casting alloy.
Review corrosion resistance, القدرة على الماكينات, hardness condition and post-processing requirements.
تحديد الدرجة الكاملة, supply condition and any heat treatment or hardness requirements.
Select around conductivity, corrosion behavior, القوة والقدرة على الماكينات. Grade suitability depends on the part.
Exact alloy, stock availability, tool wear and inspection scope require project review.
Machining and molding suitability differ. PTFE and Torlon require process-specific review; not all materials suit conventional thermoplastic injection molding.
Grades shown are options for engineering review, not a claim that every grade is stocked or suitable for every process. Confirm grade, حِدّة, لون, additives and documentation before ordering.
وظيفة, appearance and assembly
Finishing changes a part’s surface—and can change the fit. Confirm thickness, masking, roughness and inspection requirements with the drawing.
Finish appearance depends on substrate, سبيكة, preparation and processing.
We review deburring, تلميع, أنودة, تصفيح, الطلاءات, heat treatment and assembly operations together with the manufacturing route. Critical interfaces should be checked in their required final condition.
Explore Surface Finishes →Protective and decorative aluminum oxide finish. Specify color, سماكة, masking and sealing.
Wear-focused aluminum finish. Review dimensional growth, alloy response and sealing requirements.
Durable coated surface for suitable substrates. Specify color, نَسِيج, thickness and masked interfaces.
Electrochemical finishing for suitable alloys. Review surface targets and dimensional effects.
Surface treatment for suitable stainless steels. Specify the required standard and cleanliness criteria.
Select coating chemistry and thickness around corrosion, يرتدي, conductivity and substrate compatibility.
Define the intended appearance and surface roughness. Cosmetic expectations should be agreed with a sample.
A secondary operation selected for material condition and hardness. Review distortion and any final machining allowance.
From a single interface to a complete component
Metal and plastic components are made to your drawings. Send the geometry, material and intended use so we can assess the right process and inspection plan.
Part families shown for process selection. أبعاد, material and suitability are confirmed for each project.
Explore Our Parts Gallery →Application-driven manufacturing
Match the manufacturing route to the operating environment, critical features and documentation requirements—not just the industry name.
Lightweight brackets, المساكن, mechanical components and precision assemblies.
Explore Aerospace →Powertrain, الاختبار, vehicle, EV and production-equipment components.
Explore Automotive →العلب الدقيقة, fixtures and mechanical components made to the specified drawing.
Explore Medical →إطارات, actuator parts, المفاصل, housings and motion-system components.
Explore Automation & Motion Applications →تركيبات, القبيبين, الأدوات, machine components and custom assemblies.
Explore Automation →Battery-system, power-electronics and industrial energy-equipment components.
Discuss Energy Components →Industry examples do not imply application approval or sector-specific certification. Regulated or safety-critical requirements must be identified and agreed during quotation.
Decisions supported by manufacturing detail
Down to ±0.005 mm for suitable CNC features, with critical dimensions reviewed before quotation.
Continue from development into pilot builds and repeat orders with an agreed drawing and manufacturing route.
Compare CNC machining, صب, sheet metal and molding through one manufacturing partner.
Review tool access, سمك الجدار, datums, tolerances and finishing risks before committing to production.
ايزو 9001:2015 إدارة الجودة, agreed inspection planning and project-specific reports.
Metal and plastic grades evaluated around the application, عملية, availability and documentation needs.
Manufacturing from Dongguan, الصين, with packaging and delivery planned for overseas engineering and sourcing teams.
A clear path from CAD to delivery
Send 2D drawings and/or 3D CAD files, material grade, كمية, finish and the requirements that control acceptance.
We evaluate geometry, critical tolerances, مادة, tooling and the manufacturing route. Design risks are discussed before production.
Review pricing, process recommendations, tooling scope and estimated lead time. Confirm inspection, packaging and delivery requirements.
Production starts after drawing revisions, specifications and commercial terms are approved.
Critical dimensions and agreed requirements are checked against the approved inspection plan. Required documentation is prepared.
Parts are protected, packaged and shipped to the agreed destination. Delivery terms and transport arrangements follow the confirmed order.
Send the details that determine the quote
Share your design and application. Our engineering team reviews the material, manufacturing route and critical requirements before confirming pricing and lead time.
خطوة | سان تومي وبرينسيبي | إيجيس | X_T | المحكمة الخاصة بلبنان | DWG | دكسف | قوات الدفاع الشعبي
Prefer email?
info@tops-precision.com
Answers for engineering and procurement
Precision manufacturing produces components to defined dimensional, geometric, material and surface requirements. The process is selected around the drawing and application, then checked against agreed inspection criteria.
TOPS Precision provides CNC machining, يموت الصب, sheet metal fabrication and plastic injection molding for custom metal and plastic components. Engineering review, الأدوات, العمليات الثانوية, finishing and inspection are planned around each project.
For suitable CNC-machined features, TOPS can support tolerances down to ±0.005 mm. This is not a default tolerance for every dimension or process. مادة, هندسة, feature size, درجة حرارة, finishing and measurement method must be reviewed before the tolerance is confirmed in the quotation.
TOPS supports more than 100 metal and plastic material options across its manufacturing services. Common families include aluminum, الفولاذ المقاوم للصدأ, فُولاَذ, نحاس, نحاس, titanium and engineering plastics such as ABS, الكمبيوتر, بوم, نظرة خاطفة, نايلون, ص, PMMA and PTFE. Exact grade, stock condition and process suitability are confirmed during review.
نعم. CNC machining and other suitable rapid manufacturing methods can produce prototypes for fit, assembly and functional evaluation. Send your CAD model, critical dimensions and intended test conditions so the prototype material and manufacturing route can be selected appropriately.
نعم. TOPS supports low-volume batches, pilot builds and bridge production. التصنيع باستخدام الحاسب الآلي, soft tooling where suitable, or other processes are compared using geometry, unit quantity, tooling cost and the expected path to production.
نعم. TOPS supports repeat manufacturing programs. Approved drawing revisions, إعدادات العملية, inspection requirements and material specifications are used to control subsequent orders. Tooling capacity, lead time and batch size are confirmed for the program.
Inspection is planned around the drawing. TOPS uses CMM, القياس البصري, ميكرومتر, gauges and other suitable equipment for dimensional checks. XRF can support alloy-composition screening where appropriate; it does not replace every required material test or certificate.
نعم. شهادات المواد, dimensional inspection reports, فاي, certificates of conformity (CoC) and RoHS documentation can be provided as agreed for the project. Specify the required standard, report format, sampling plan and traceability level before quotation.
نعم. TOPS manufactures metal components through machining, casting and sheet metal fabrication, and plastic components through machining and injection molding. Material behavior and manufacturing constraints are reviewed separately for each part.
Send the latest 2D drawing and 3D model, material grade, quantity per part, critical tolerances, ينهي, inspection and documentation requirements, delivery date and shipping destination. خطوة, سان تومي وبرينسيبي, إيجيس, X_T, المحكمة الخاصة بلبنان, DWG, DXF and PDF files can be reviewed.
CNC machining often suits prototypes, lower quantities and critical features without dedicated production tooling. Die casting can suit repeat metal parts when alloy, geometry and quantity justify the tool. Injection molding can suit thermoplastic parts at repeat volumes. Engineers compare total program cost, تسامح, مادة, tooling and production quantity before recommending a route.
LET’S REVIEW YOUR NEXT COMPONENT
Send the drawing, material and quantity. Start with a practical engineering review of your custom metal or plastic part.
Get a Manufacturing Quote ↗