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Suzhou Jingzhan Mould Technology Co., LTD
Jiangsu, China
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Machining
Molding
Assembly
Mold Making
Turning
Injection Mold Making
Injection Molding
Others
+2
Factory Size
10,000-30,000 ㎡
Employees
51-100
Certifications
ISO 9001, ISO 13485
Product Equipment
13 types / 53 sets
Factory
Machining
Fabrication
Assembly
Rapid Prototyping
Molding
5 Axis Milling
Boring & Milling Machining
CNC Milling & Milling
+7
Factory Size
3,000-5,000 ㎡
Employees
1-50
Certifications
--
Product Equipment
11 types / 31 sets
Factory
Atlas Intelligent Engineering (Jiangsu) Co., LTD
Jiangsu, China
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Fabrication
Machining
Assembly
Welding or Bonding
Cutting
CNC Milling & Milling
Wire Electrical Discharge Machining
Others
+4
Factory Size
5,000-10,000 ㎡
Employees
51-100
Certifications
ISO 9001
Product Equipment
27 types / 66 sets
Factory
Guangdong Pinduan Intelligent Technology Development Co., Ltd.
Guangdong, China
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Molding
Mold Making
Machining
Multi-Shot Injection Molding
Surface Grinding
Injection Mold Making
CNC Milling & Milling
Injection Molding
+9
Factory Size
10,000-30,000 ㎡
Employees
101-200
Certifications
IATF16949, ISO 13485, ISO 9001, ISO 14001
Product Equipment
66 types / 133 sets
Multi-Axis Motor Mounting Bracket
Two-Color Injection Molded Home Appliance Housing Assembly
Spherical Dual-Color Visor Housing
Transparent Lamp Shade and Metal Base Assembly
Factory
Tongling Sanyuan Machinery Manufacturing Co., Ltd.
Anhui, China
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Machining
Casting
Mold Making
Assembly
Turning
Milling & Turning
CNC Milling & Milling
Boring & Milling Machining
+6
Factory Size
3,000-5,000 ㎡
Employees
51-100
Certifications
ISO 14001, ISO 45001, ISO 9001
Product Equipment
44 types / 61 sets
Flange
Factory
Ningbo Geshi Auto Parts Co., Ltd.
Zhejiang, China
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Molding
Mold Making
Injection Molding
Injection Mold Making
Assembly
Others
Factory Size
10,000-30,000 ㎡
Employees
51-100
Certifications
--
Product Equipment
90 types / 90 sets
Automotive Dashboard Skeleton and Interior Injection Molded Parts
Automotive Dashboard Air Vent Trim Injection Molding Part
Automotive Interior Injection Molded Structural Parts
Automotive Dashboard Trim Injection Molded Parts
Factory
Shanghai, China
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Machining
Swiss Machining
Turning
Others
Stamping
Assembly
Molding
Mechanical Assembly
+3
Factory Size
10,000-30,000 ㎡
Employees
201-500
Certifications
ISO 14001, ISO 13485, ISO 45001, ISO 9001
Product Equipment
4 types / 90 sets
Factory
Jiangsu, China
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Machining
Molding
Assembly
Mold Making
Surface Grinding
Gantry Milling
CNC Milling & Milling
Turning
+6
Factory Size
10,000-30,000 ㎡
Employees
101-200
Certifications
ISO 9001, ISO 14001, ISO 45001, ISO 9001
Product Equipment
23 types / 123 sets
wire guide pulley
rubber-coated caster
Factory
Shanghai Qinchong Machinery Technology Co., LTD
Shanghai, China
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Machining
Assembly
Stamping
Fabrication
Welding or Bonding
Electrical Products Assembly
Mechanical Assembly
Deep Draw
Factory Size
3,000-5,000 ㎡
Employees
1-50
Certifications
ISO 9001
Product Equipment
18 types / 201 sets
Vertical Vessel Module with Process Skid Unit and Dense External Piping Manifold
Factory
杭州聚森智能装备有限公司
Zhejiang, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 2 yrs
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Machining
Mold Making
Fabrication
Assembly
Turning
Boring & Milling Machining
CNC Milling & Milling
Electrical Products Assembly
+12
Factory Size
10,000-30,000 ㎡
Employees
101-200
Certifications
ISO 9001
Product Equipment
57 types / 163 sets
upper  furnace  tube of a single-crystal furnace
Rectangular Frame Module with Roller Conveyor Module and Flanged Bearing Shafts
Circular Hatch Assembly with Stainless Steel Inspection Hatch and Hinged Discharge Door
Machined Housing with Large Circular Housing and Concentric Stepped Faces, Bolt Holes
Factory
Changzhou Fangzhi Precision Machinery Manufacturing Co., Ltd.
Jiangsu, China
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Machining
Assembly
Casting
Die Casting
Others
Turning
CNC Milling & Milling
Factory Size
3,000-5,000 ㎡
Employees
1-50
Certifications
ISO 9001, GJB9001c-2017, ISO 45001, ISO 14001
Product Equipment
12 types / 19 sets
Cast Structural Component for Robot Forearm
Welding Robot J6 Axis Housing
Welding Robot J5 Axis Housing
Desktop Robotic Arm Rotational Joint Housing
Factory
Ningbo Hongtai Weiye Plastic Co., Ltd.
Zhejiang, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 2 yrs
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Mold Making
Molding
Machining
EDM
Injection Mold Making
CNC Milling & Milling
Injection Molding
Wire Electrical Discharge Machining
+6
Factory Size
10,000-30,000 ㎡
Employees
201-500
Certifications
ISO 9001
Product Equipment
-- / --
Thermoplastic Housing Assembly With Photoelectric Smoke Detector and Surface Mounting Features
Thermoplastic Enclosure Shell With Plastic Case Housing and Molded Mounting Features
Thermoplastic Housing With Panel Enclosure and Integrated Mounting Features
Industrial Control Module With Programmable Logic Controller and Thermoplastic Housing
Factory
Shanghai, China
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Machining
Stamping
Assembly
Molding
CNC Milling & Milling
Turning
Specai-Purpose Machine Forming
Milling & Turning
+7
Factory Size
3,000-5,000 ㎡
Employees
1-50
Certifications
ISO 9001, IATF16949
Product Equipment
40 types / 100 sets
Stamped Rocker Cover Housing with Engine Valve Cover and Parallel Raised Ribs
Domed Plug Assembly with Push In Panel Plug and Stepped Rubber Insert
Hose Bent Shank Kit with Flexible Braided Water Hose and Hexagonal Threaded Fittings
Removable Fastening Hardware Kit with Quick Release Pins and Knurled Cylindrical Grips
Factory
Huizhou Shengli Technology Co., LTD
Guangdong, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 1 yrs
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Molding
Mold Making
Finishing
Assembly
Injection Molding
Multi-Shot Injection Molding
Injection Mold Making
Other Plastic&Rubber Product Mold Making
+6
Factory Size
5,000-10,000 ㎡
Employees
101-200
Certifications
ISO 9001, ISO 14001, CCC
Product Equipment
25 types / 75 sets
HUD Injection molding & flocked paint coating
two-shot plastic parts of waterproof box
two-shot plastic parts of drone parts
two-shot plastic parts
Factory
Jianda Electric Co., Ltd
Zhejiang, China
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Mold Making
Stamping
Assembly
Molding
Multi-Shot Injection Molding
Injection Molding
Fine Blanking
Stamping
+4
Factory Size
30,000+ ㎡
Employees
201-500
Certifications
ISO 9001, ISO 9001, IATF16949, IATF16949, ISO 45001, ISO 45001, ISO 14001, ISO 14001
Product Equipment
14 types / 308 sets
Low-Voltage Circuit Breaker Housing and Base
Electrical Connectors and Fuse Holders
Automotive ECU Housing
Precision Injection Molded Electrical Brackets and Fluid Fittings
Factory
Ningbo Dingfeng Chain Industry Co., Ltd.
Zhejiang, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 1 yrs
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Machining
Stamping
Assembly
Mold Making
Stamping
Fine Blanking
Turning
Surface Grinding
+2
Factory Size
30,000+ ㎡
Employees
1-50
Certifications
--
Product Equipment
16 types / 62 sets
Precision Roller Conveyor Chain
Custom Conveyor Chain Assemblies
Precision Roller Chain Assembly
Factory
Hefei Aikesi Intelligent Technology Co., Ltd.
Anhui, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 2 yrs
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Fabrication
Finishing
Assembly
Plastic Spraying
Structure
Powder Coating
Electrical Products Assembly
NC Punching
+6
Factory Size
10,000-30,000 ㎡
Employees
101-200
Certifications
ISO 9001
Product Equipment
23 types / 81 sets
Racks
Cabinets
Factory
Jiangsu BarepSmart TechnologyCo.,Ltd
Jiangsu, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 1 yrs
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Molding
Stamping
Assembly
Mold Making
Electronics Assembly
Mechanical Assembly
Electrical Products Assembly
Stamp Die Making
+6
Factory Size
30,000+ ㎡
Employees
201-500
Certifications
ISO 9001
Product Equipment
55 types / 167 sets
High-Voltage Connector Plastic Base
Electrical plastic enclosures
L-Shaped Insulated Conductive Connecting Plate
Precision Stamped Metal Bracket
Factory
Beijing Sanwei Boyi Machinery Manufacturing Co., Ltd
Beijing, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 5 yrs
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Machining
Fabrication
Assembly
Stamping
Mold Making
5 Axis Milling
Gantry Milling
CNC Milling & Milling
+26
Factory Size
10,000-30,000 ㎡
Employees
51-100
Certifications
ISO 9001, GJB9001c-2017
Product Equipment
26 types / 86 sets
Bench Manual Multi-Blade Cutter with Iron Strip Cutter and T-Shaped Hand Lever
Cylindrical Housing Body with Machined Housing Flange Plates and Vertical Cutout Windows
Machined Flanged Component Body with Composite Housing Component and Cylindrical Stepped Base
Rectangular Welded Assembly with Roller Frame Assembly and Parallel Cylindrical Rollers
Factory
Suzhou Zhongsuda Electronic Technology Co., LTD. / Kunshan Zhongsuda Electronic Co., LTD
Jiangsu, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 1 yrs
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Stamping
Fine Blanking
Injection Molding
Electronics Assembly
Electrical Products Assembly
Stamping
Molding
Assembly
+2
Factory Size
3,000-5,000 ㎡
Employees
101-200
Certifications
IATF16949
Product Equipment
18 types / 98 sets
Factory
HANGZHOU XIAOSHAN BADA AUTO PARTS CO.,LTD.
Zhejiang, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 10 yrs
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Bending
NC Punching
Stamping
Deep Draw
Progressive Die Stamping
Fine Blanking
Injection Molding
Electronics Assembly
+8
Factory Size
10,000-30,000 ㎡
Employees
1-50
Certifications
--
Product Equipment
28 types / 180 sets
Skylight--frame
Locks for door or for tools-box
Automotive Parts
Griller Hardware
Factory
Zhongshan Zhaosheng Hardware Products Co., Ltd.
Guangdong, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 1 yrs
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Fabrication
Assembly
Stamping
Finishing
Machining
Welding or Bonding
Bending
Tube Modification
+7
Factory Size
5,000-10,000 ㎡
Employees
1-50
Certifications
ISO 9001, ISO 9001
Product Equipment
11 types / 26 sets
Vehicle Roof Rack Crossbar Assembly
Factory
Suzhou Hanbo Precision Molding Technology Co., LTD
Jiangsu, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 1 yrs
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Machining
Molding
Assembly
Mold Making
CNC Milling & Milling
Injection Molding
Injection Mold Making
Others
+2
Factory Size
10,000-30,000 ㎡
Employees
101-200
Certifications
ISO 14001, ISO 9001, ISO 45001, ISO 13485
Product Equipment
17 types / 67 sets
Medical Packaging Consumables
Gearbox Assembly
Factory
Changsha Meiyu Electric Appliance Co., Ltd
Hunan, China
Haizol Lifetime VIP permanent membership tier benefits badge Premium Member 2 yrs
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Fabrication
Finishing
Assembly
Machining
Bending
Welding or Bonding
NC Punching
Cutting
+8
Factory Size
30,000+ ㎡
Employees
201-500
Certifications
EN 15085, ISO 3834
Product Equipment
207 types / 226 sets
Stamped Aluminum Panel Section with Vehicle Side Body Panel and Trimmed Mounting Edges
Rectangular Aluminium Enclosure with Hinged Panel Equipment Enclosure and Corner Fastener Bosses
Freestanding Stainless Steel Cabinet with Electrical Enclosure Cabinet and Internal Mounting Backplate
Brass Sheet Metal Scroll Housing with Centrifugal Blower Housing and Volute Scroll Profile
Factory
Machining
Assembly
Fabrication
Stamping
Gantry Milling
CNC Milling & Milling
Electrical Products Assembly
Mechanical Assembly
+6
Factory Size
5,000-10,000 ㎡
Employees
51-100
Certifications
ISO 9001
Product Equipment
31 types / 31 sets
Factory
Zhejiang, China
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Mold Making
Stamp Die Making
Stamping
Fabrication
Assembly
Stamping
Electronics Assembly
Fine Blanking
+1
Factory Size
10,000-30,000 ㎡
Employees
101-200
Certifications
ISO 9001
Product Equipment
-- / --
Circuit Breaker Electromagnetic Trip Assembly
Electro-galvanized Steel Mounting Brackets
Circuit Breaker Insulated Contact Support
Circuit Breaker Locking Bracket
Factory
Jiangsu, China
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Fabrication
Machining
Assembly
Bending
Cutting
Structure
Wire Electrical Discharge Machining
CNC Milling & Milling
+6
Factory Size
5,000-10,000 ㎡
Employees
1-50
Certifications
ISO 9001
Product Equipment
27 types / 58 sets
Bracket
Bracket  For Switch
Cylinder
Cylinder Plunger
Factory
Fabrication
Stamping
Fine Blanking
Stamping
Cutting
Bending
Assembly
Welding or Bonding
+2
Factory Size
10,000-30,000 ㎡
Employees
101-200
Certifications
IECQ
Product Equipment
25 types / 121 sets
Round Louvered Air Vent Panel
Concealed Square Access Panel
Aluminum Alloy Access Panel
Aluminum Alloy Louver Air Vent Panel
Factory
Zhejiang, China
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Machining
Fabrication
Assembly
Specai-Purpose Machine Forming
Turning
5 Axis Milling
Boring & Milling Machining
Gantry Milling
+20
Factory Size
1,000-3,000 ㎡
Employees
1-50
Certifications
ISO 9001, ISO 45001, ISO 14001
Product Equipment
25 types / 49 sets
Reversing cage truck
Fully automatic conveying and warehousing project
Upper arm assembly tooling
Factory
Hubei, China
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Machining
CNC Milling & Milling
Boring & Milling Machining
5 Axis Milling
Gantry Milling
Turning
Others
Nuts
+13
Factory Size
10,000-30,000 ㎡
Employees
51-100
Certifications
IATF16949, ISO 9001, GJB9001c-2017
Product Equipment
-- / --
hydraulic Cylinder
New energy auto motive spare parts
Factory
Guangdong, China
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Machining
Assembly
Others
5 Axis Milling
CNC Milling & Milling
Turning
Wire Electrical Discharge Machining
Swiss Machining
+5
Factory Size
10,000-30,000 ㎡
Employees
201-500
Certifications
ISO 9001, IATF16949, ISO 13485, AS9100
Product Equipment
35 types / 327 sets
spring plunger
Factory
Stamping
Assembly
Powdered Metal Forming
Stamping
Sinter
MIM
Others
Machining
Factory Size
10,000-30,000 ㎡
Employees
51-100
Certifications
ISO 9001, IATF16949
Product Equipment
19 types / 124 sets
Micro Gearbox Shaft Assembly
Micro Gearbox Housing with D-Shape Output Shaft
Micro Gearbox Housing with D-Shaft
Micro Gearbox Assembly with D-Shaft
Factory
Fabrication
Assembly
Cutting
Tube Modification
NC Punching
Bending
Welding or Bonding
Mechanical Assembly
+2
Factory Size
1,000-3,000 ㎡
Employees
1-50
Certifications
--
Product Equipment
24 types / 36 sets
Electrical Enclosure
9-fold Profile/9-folded section
Electrical Enclosure
Factory
Fabrication
Bending
Welding or Bonding
Cutting
Structure
Assembly
Electronic Components & Devices
Mechanical Assembly
+3
Factory Size
10,000-30,000 ㎡
Employees
1-50
Certifications
--
Product Equipment
27 types / 28 sets
Factory
Machining
CNC Milling & Milling
Turning
Swiss Machining
Milling & Turning
5 Axis Milling
Boring & Milling Machining
Assembly
+1
Factory Size
1,000-3,000 ㎡
Employees
1-50
Certifications
--
Product Equipment
7 types / 20 sets
Factory
Machining
Assembly
Fabrication
Welding or Bonding
Bending
Cutting
CNC Milling & Milling
Turning
+2
Factory Size
5,000-10,000 ㎡
Employees
1-50
Certifications
ISO 9001
Product Equipment
16 types / 34 sets
Factory

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Product assembly factory in China

Product Assembly Companies in China

Assembling components or parts-mechanical, electronic, or other-into a finished product ready for use or sale is an essential part of the assembly manufacturing process.

Many western companies look to China to fulfil this part of the process, due to the available cost savings, skilled workforces, unbeatable lead times, scalable production, and integrated supply chains.

Whether subassembly (partial builds), complete end-to-end assembly with packaging and labelling or testing and inspection services, this specialist area requires reliable partners. Sourcing these partners from the other side of the world can present challenges, especially with quality control, logistics, and IP protection.

That’s where the Haizol platform comes in. Our large database of trusted product assembly companies are all individually vetted before becoming members on our platform.

With a single RFQ, we rapidly connect you with multiple high-quality certified product assembly companies that can meet your project requirements. You negotiate directly with the Chinese factory rather than through a third party-we take no commission from orders and is free to use.

Related categories: Cable Assembly Companies, Electronics Assembly Companies, Mechanical Assembly Companies.

Frequently Asked Questions

How Do Assembly Costs in China Compare to Other Regions?

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Lower labour costs and integrated supply chains mean businesses typically save 30–50% by using Chinese product assembly companies compared to western factories. Get multiple quotes from verified assemblers within 24–48 hours on our platform.

What Lead Times Should I Expect for Assembly Projects?

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Simple sub-assemblies are often completed in as little as 1–2 weeks after parts are ready, while complex builds usually take 3–5 weeks. Estimated lead times are made clear on all supplier quotes.

What’s the Best Way to Use Haizol for Assembly Sourcing?

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To receive multiple recommendations for assembly companies, submit an RFQ with your BOM, drawings, and assembly notes. The assembly suppliers will quote directly, and you can compare price, lead time, and equipment/machinery side by side on the dashboard.

What Does Product Assembly Mean?

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Product assembly means combining parts, hardware, electronics, labels, packaging, or subassemblies into a finished or semi-finished product. Assembly work can include fastening, adhesive bonding, soldering, wiring, testing, labeling, kitting, packaging, and final inspection before shipment.

How Do You Choose Product Assembly Companies in China?

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Product assembly selection starts with the handoff: which parts arrive from the company, which items the factory sources, how the product is tested, and how it is packed. Haizol connects assembly projects with verified Chinese factories, so companies can check assembly experience, fixture needs, inspection, documentation, and packaging fit before quoting.

What Should a Product Assembly Quote Request Include?

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For product assembly quotes, separate what is supplied by the company from what the factory must source. Assembly drawings, bill of materials, fixtures, test steps, packaging instructions, labels, quantity, and inspection requirements help Chinese factories identify missing components and quote the full build scope.