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China factories

China factory - Shangdi Auto Parts Co., Ltd

Shangdi Auto Parts Co., Ltd

  • China,Guangzhou ,Guangdong
  • Verified Supplier
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Shangdi Auto Parts Co., Ltd

We are the professional factory specialized in research, development and productionfor luxury model cars such as BMW, Mercedes Benz and Porsche over 10 years.

Our upgraded products have been improved on the design and material to make them better hand feeling andmore durable than original parts at all costs.At present, we have new molds and products over three hundreds including the varietyof vulnerable interior parts such as the ac vent grilles, interior door handles and ac buttons.Each of product is upgraded and improved on design and structure repeatedly and made of eco-friendly and good quality material to provide the best user experience for the car owners.
We are sincerely invite all the auto parts business man, 4S shop owners, automotivemaintain professional workers, car owners to join with us on the research, development,trial and selling of automotive parts. Let's make effort together to create more betterpartsand accessories for all the car owners in the world.

  • China Factory - Shangdi Auto Parts Co., Ltd
  • China Factory - Shangdi Auto Parts Co., Ltd
  • China Factory - Shangdi Auto Parts Co., Ltd
  • China Factory - Shangdi Auto Parts Co., Ltd

Basic Information

Company Name: Shangdi Auto Parts Co., Ltd
Business Type: Manufacturer
Brands: Goodithy
Employee Number: 50~100
Year Established: 2015
Company Location: Bulding A, No.5 dongyuan street, Dongfengxi road, Dongping,Baiyun,Guangzhou,Guangdong,510442,China.
Factory Location: No.5 dongyuan street, Dongfengxi road, Dongping,Baiyun,Guangzhou,Guangdong,510442,China.

Trade & Market

Company slogan: Professional factory for interior parts of Germany cars.
OEM Overview:
  • ✅ Professional ODM Service‑Customized Product Development Our in‑house R&D and mold team supports ODM custom development. According to your market demand, sample or drawing, we complete 3D modeling, structural optimization, mold development and sample making. We can improve original weak‑point structure, adjust surface finish (painting / electroplating) and color to create exclusive aftermarket auto interior parts for your brand.
  • ✅ Flexible OEM Service‑Private Label & Custom Packing We provide OEM private‑label service. Support printing your brand logo on products, inner boxes or outer cartons. Custom‑made neutral packing, color box and gift box solutions are available. You can use your own brand without extra mold modification for existing mature items.
  • ✅ Sample Support For Verification Samples are available for quality, fitment and appearance confirmation before bulk order. ODM new‑project samples need mold‑related cost; existing OEM items can offer stock samples for your evaluation. Help you check product performance before large‑volume investment.
  • ✅ Wide Compatibility For Auto Aftermarket Parts Focus on Germany luxury car interior replacement parts, such as door inner handles, AC vent repair kits and interior trim accessories. We accept small‑batch trial order and large‑volume mass production, serve cross‑border sellers, repair shops, local distributors and brand owners globally.
  • ✅ Full‑process Quality Control For Custom Orders Strict multi‑stage QC runs through custom projects, from prototype sample, trial‑production batch to mass shipment. We keep consistent quality for OEM & ODM orders, and offer technical communication during the whole cooperation cycle.
Production Line:

Full Production Process of Plastic Car Accessories:

1. Product Design & R&D We perform reverse 3‑D scanning based on original OE parts. Our engineers optimize weak stress points to improve original‑part breaking issues. Confirm material specification of reinforced PC+ABS / ABS plastic. Complete DFM review for injection, painting and electroplating requirements, confirm tolerance and assembly structure.

2. Mold Development Design mold structure according to 3D drawing. Use high‑grade mold steel for CNC, EDM and mirror polishing. Complete multi‑round trial mold (T0‑T3). Modify mold repeatedly until samples meet assembly requirement, ensure tight tolerance for clips and mounting positions.

3. Injection Molding Raw material drying to eliminate moisture. Inject melted plastic under high pressure. Robot takes out finished blanks. Gate material trimming. First‑article inspection for shrinkage, short shot and flash. Mass production after parameter confirmation. Semi‑finished parts sorting.

4. Surface Painting (Optional) Parts degreasing & dust removal. Masking fixtures protect clip positions. Primer & top‑coat spraying with oven curing. Inspect for color difference, paint sagging and poor adhesion. This step will be skipped for electroplating version.

5. Electroplating Process (Chrome Version) Plastic electroplating for ABS substrate. Include etching, neutralization, chemical nickel, copper plating, nickel plating and chrome plating. Strict inspection for blistering, peeling, scratch and spot defect. Reject defective plating parts.

6. Assembly Workstation Assemble main handle body, return spring, rotating shaft and small accessory parts on assembly line. Test handle rebounding function repeatedly to ensure smooth movement without stuck.

7. Multi‑level QC Inspection ‑ Incoming inspection for injection blanks ‑ Appearance inspection for painting / electroplating surface ‑ 100% functional test for handle rebound & clip fitting ‑ Sampling dimension check ‑ Simulated fitting test with original car mounting base Remove cracked, scratch, paint‑loss and malfunction items.

8. Packing Each handle packed individually with bubble bag to avoid scratch. Small spare accessories included. Pack into inner box, then carton with buffer filler. Mark OE number and quantity on outer carton, prevent damage during long‑distance international shipping.

9. Shipment & Delivery Order checking for model, OE number and quantity. Generate shipping label and tracking number before hand over to forwarder.
R&D:

Complete R&D Process

1. 3D Reverse Scanning

We adopt high-precision 3D laser scanning technology to fully collect the original product data. All contours, curved surfaces, mounting clips, hole positions and stress structural details are accurately restored 1:1. It effectively avoids manual measurement errors and provides accurate original factory data support for subsequent modeling and mold development.

2. 2D Engineering Drawing Design

Based on scanned 3D data, our engineers design standard 2D CAD drawings in strict accordance with auto parts industry tolerances. All core parameters including overall dimension, wall thickness, draft angle, assembly gap, clip specification and surface process requirements are clearly marked to standardize mold making, production and quality inspection standards.

3. 3D Modeling & Structural Optimization

We restore the original product structure through professional 3D modeling. Meanwhile, we optimize the inherent weaknesses of original factory parts, such as easy breaking, loose clips and poor rebound. DFM manufacturability evaluation is completed in advance to solve potential problems of injection molding, painting and electroplating, ensuring the product has excellent durability and mass production stability.

4. Mold Design & Manufacturing

According to product structural characteristics, we customize professional mold cavities, gating systems, cooling water channels, ejection and exhaust structures. Adopting high-quality mold steel and processed by CNC, EDM and high-precision mirror polishing, the molds ensure smooth product surface, no burrs or shrinkage, and meet high-standard painting and electroplating process requirements.

5. Initial Mold Trial and Testing

After mold completion, we conduct the first trial injection to produce prototype samples. Our R&D and QC team comprehensively inspect product dimension, radian, assembly tightness and surface quality. We record all defects such as deformation, flash and short shot, and form a detailed trial report for subsequent mold correction.

6. Precision Mold Modification & Iteration

Targeted optimization and modification are carried out according to trial mold problems. We adjust mold precision, cooling system, exhaust structure and assembly gaps through multiple iterations. Eliminate all assembly obstacles and molding defects to ensure the mold reaches stable and qualified mass production standards.

7. Comprehensive Performance Testing

All finished products undergo strict professional tests, including vehicle fitting test, thousands of times mechanical fatigue test, high and low temperature aging test, surface adhesion & corrosion resistance test, and dimensional tolerance sampling test. All products strictly comply with original factory standards to ensure stability, durability and perfect vehicle adaptability.

8. Solution Finalization & Mass Production Launch

After all test items fully meet the standards, we finally confirm and lock the product 3D scheme, mold parameters, production process specifications and quality inspection standards to complete the finalization of new product R&D. We synchronously output complete product drawings, process documents and quality inspection specifications, and officially launch formal mass production. Meanwhile, we support continuous technical iteration and long-term customized ODM upgrading services according to customer demands.
Our Team:
  • Professional R&D & Mold‑Development Team:Our in‑house R&D team consists of experienced structural engineers and mold designers. We analyze original factory defects of auto parts, complete 1:1 reverse modeling, mold development and product structure optimization. Continuously launch upgraded repair kits for new car models to meet market demands.
  • Experienced Production & Manufacturing Team:Skilled production team works in our independent injection‑molding workshop. Strictly manage raw material feeding, injection molding, assembling and processing. Standardized operating procedures ensure stable product consistency for both small‑batch orders and large‑volume bulk production.
  • Strict QC Quality‑Control Team:Dedicated quality‑control team carries out multi‑round inspection from incoming raw materials, semi‑finished products to finished goods. Check appearance, structure size and product function one by one before packing. Effectively reduce defective rate for global shipments.
  • Efficient Global Sales & Business Team:Our sales team is familiar with auto aftermarket and cross‑border trade. Provide professional fitment check, OE‑number verification, wholesale solution and custom service. Support individual buyers, repair shops and global distributors.
  • Responsive After‑sales Support Team:Specialized after‑sales team offers timely communication for order inquiries, transportation damage, quality and compatibility issues. Provide practical solutions to solve customers’ problems efficiently and reduce purchase risks.
    Company Team

Company Team
History:

 With 10+ years of manufacturing experience in auto aftermarket repair parts, we are source factory focusing on Germany car interior repair accessories. We own independent mold‑development & production workshop, continuously upgrade product structure to improve original defects. Strict quality control is implemented in every production link. We serve individual buyers, repair garages and wholesalers across global markets, offer reliable, cost‑effective replacement parts as well as wholesale & custom service.

  • Year 2014-2016:Foundation & Market Exploration We started as auto aftermarket solution provider, focusing on researching common interior defects of Germany luxury vehicles. Identified pain points of broken AC vent grille and high cost of OEM whole‑assembly replacement, laid product direction for car interior repair kits.
  • Year 2016-2017:Self‑owned Mould R&D & Pilot Production Built independent mold‑making, injection and assembling workshop. Completed first‑batch 1:1 mould development. Realized independent production from raw material to finished product.
  • Year 2018-2020:Product Iteration & Quality Upgrade Optimized plastic formula and reinforced fragile clip structure to improve original‑part defects. Implemented complete in‑house QC process covering incoming material, semi‑finished goods and final inspection. Expanded product portfolio to more car models.
  • Year 2020-2023:Global Market Expansion Deeply cooperated with cross‑border sellers, local auto repair shops and wholesalers. Products exported to Europe, North America and other overseas regions. Formed stable wholesale, retail and customized order service system.
  • Year 2023‑:Continuous Innovation & Sustained Operation Keep investing in R&D for new aftermarket repair parts. Improve packaging solution for long‑distance international transport. Stick to source‑factory positioning, provide cost‑effective reliable replacement parts for global buyers.
    Company History

Company History
Service:

We are always insist in our following 6 point service for all customers.
-Professional Pre‑sales Technical Support:We provide professional vehicle fitment check, OE‑number verification and installation guidance. 

-Stable Inventory & Fast Shipment:Most items are in‑stock, ship out within 1‑3 working weeks after payment. 

-Thoughtful After‑sales Service:Responsive after‑sales team for quality, damage or compatibility issues. Reasonable solution including partial refund, resend or return option, solve your problems efficiently.

-Wholesale & Custom Service Available:We can offer customized packing, logo printing for wholesale buyers, welcome retailers and repair shops to contact us for  cooperation.

-Strict Quality Inspection Before Dispatch:Every item goes through appearance and function test before packing. We pay attention to package protection to reduce breakage risk during international long‑distance  transportation.
-Free Return and Resend Service: If the goods are with quality problem after you received in 30days, we can refund or resend the goods for you.

company service

Company Service

Factory Information

Market name: Worldwide
Contact Person: Ms Tina Lei

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Get in touch with us

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  • Shangdi Auto Parts Co., Ltd
  • Bulding A, No.5 dongyuan street, Dongfengxi road, Dongping,Baiyun,Guangzhou,Guangdong,510442,China.
  • https://www.shangdi66.com/

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