Best Injection Molding Companies in 2026

China remains one of the strongest global hubs for injection molding services, driven by factories equipped with automated molding cells, multi-shot systems, precision mold-building teams and integrated post-processing lines. Many sites run 24-hour production with strict tool control, capable of holding stable tolerances across large volumes and complex geometries, from cosmetic housings to reinforced engineering components.

The top injection molding companies on this list meet that standard. Find your ideal injection molding partner through Haizol today.

Best Injection Molding Companies in China for 2026 Summary

Factory Name	Year Established	Factory Size (m²)	Certifications	Best For
Anhui Xiping Alwayseal Technology Ltd	2015	1,000–3,000	ISO 9001	Auto-grade seal units, trim parts, extrusion + injection molded components.
Suzhou Citu Electric Appliance Co., Ltd.	2010	0–1,000	ISO 9001	Multi-material molded parts, chain guides, brush bodies, small complex assemblies.
Ningbo Feifan Sanitary Ware Co., Ltd.	2018	10,000–30,000	Not listed	Large molded components, mixed metal–plastic assemblies, home and rail-use parts.
Suzhou Yidahui Precision Technology Co., Ltd.	Not listed	1,000–3,000	ISO 13485, ISO 9001	High-accuracy shafts, gears, motion-grade molded parts, precision metal–plastic units.
L-Tooling (HK) Co., Limited	1996 (group roots)	10,000–30,000	IATF16949, ISO 9001	High-precision mold parts, medical/automation housings, multi-process plastic units.
Xierge Precision Machinery Co., Ltd.	1990	5,000–10,000	IATF16949, ISO 9001	Precision molded parts, valve units, optical hardware, motion-grade components.
Taizhou Lynk & Co Rubber & Plastic Co., Ltd.	1994	5,000–10,000	IATF16949	Automotive and industrial rubber components, seals, O-rings, heat/oil/pressure parts.
Shaoxing Weili Plastic Products Co., Ltd.	2015	1,000–3,000	Not listed	Silicone extrusion, custom rubber parts, specialty silicone profiles and seals.

 

Anhui Xiping Alwayseal Technology Ltd - Best for Auto-Grade Seal Units and Plastic Mold Work

Specification	Details
Core processes	Blow molding, injection molding, plastic extrusion, rubber part output.
Key materials	PVC, EPDM, polyurethane foam, rubber compounds.
Tolerance range	Steady precision for seal strips and molded pads.
Facility size	1,000–3,000 ㎡
Certifications	ISO 9001
Industries served	Auto, shipbuilding, chemical, medical, power tools, military, plastics manufacturing.
Order volume strengths	Mid-volume seal units, trim parts, molded components.

About Anhui Xiping Alwayseal Technology Ltd Injection Molding Services

This injection molding company grew out of its earlier form as Xinzhou Plastic Products and now sits in Wuhu with a clear focus on auto seal units, ship hardware and trim parts. The team works with rubber compounds, PVC pellets, EPDM strips and polyureth.

They support small and mid-size runs for auto brands, heavy gear groups and build-material suppliers. Their setup covers extrusion, mold work and pad units under one roof, with spray paint as a follow-up process for color or coat needs. To learn more, explore Anhui Xiping Alwayseal Technology factory profile page.

 

Suzhou Citu Electric Appliance Co., Ltd - Best for Multi-Material Mold Parts and Small Complex Assemblies

Specification	Details
Core processes	Blow molding, injection molding, multi-shot molding, vacuum forming.
Key materials	ABS, PC, PP, PVC, PA66, PBT, PPS, high-grade plastics.
Tolerance range	Tight profiles for chain guides, brush bodies, precision joints.
Facility size	0–1,000 ㎡
Certifications	ISO 9001
Industries served	Auto, home appliances, toys, PV, power tools, consumer devices, robotics, bikes.
Order volume strengths	Small to mid runs for multi-material and high-detail plastic units.

About Suzhou Citu Electric Appliance Co., Ltd. Injection Molding Services

The company opened in 2010 inside Suzhou and built its name through mold sets for global brands. The team works with mold standards from HASCO, DME, Misumi and LKM, so each new part moves into a clear tool path fast. They build mold sets for Sony, Toshiba, Volvo, Gree and Midea, and their catalog spans chain guide rails, robot blocks, brush bodies and clear dust cups.

Their group handles mold layout, part layout, concept support and full mold output under one roof. Overall, the company keep a close focus on cost, part quality and firm delivery dates, which helps with steady output needs on ABS, PC, PP or high-heat plastics such as PA66 and PPS. To learn more, view Suzhou Citu Electric Appliance's factory profile.

Ningbo Feifan Sanitary Ware Co., Ltd - Best for Large Plastic Parts and Multi-Use Molded Components

Specification	Details
Core processes	Injection molding.
Key materials	Stainless steel, aluminum, carbon steel, high-grade plastics.
Tolerance range	Stable precision for large home-use and rail-use parts.
Facility size	10,000–30,000 ㎡
Certifications	Not listed.
Industries served	Home appliances, kitchen gear, décor, toys, sports goods, rail, outdoor gear.
Order volume strengths	Mid-to-high runs for large molded parts and mixed metal–plastic units.

About Ningbo Feifan Sanitary Ware Co., Ltd. Injection Molding Services

The factory sits in Yuyao near Ningbo Port, a location that gives fast access for raw stock and export routes. Their space holds metal-draw dies, form dies and mold sets, which allows them to shape large parts with firm structure. This setup suits injection mold work because their tool base supports deep-form cavities, wide mold plates and high-pressure cycles for bulky household or rail parts.

They use stainless steel, aluminum, carbon steel and high-grade plastics, so they match each part to the right material without delay. Their team accepts custom jobs from raw drawings or samples, which matters for clients in décor, home-use devices or rail hardware that need exact fit. Want to get more details? Get the full insights on Ningbo Feifan Sanitary Ware machinery and equipments.

Suzhou Yidahui Precision Technology Co., Ltd - Best for High-Accuracy Shaft and Gear Mold Parts

Specification	Details
Core processes	Injection molding.
Key materials	Steel alloys for shafts, sleeves, gears, thin-wall pipe units.
Tolerance range	Tight limits for motion parts in automotive and hydraulic systems.
Facility size	1,000–3,000 ㎡.
Certifications	ISO 13485, ISO 9001.
Industries served	Auto, hydraulic units, farm gear, power tools, robotics, test devices.
Order volume strengths	High-volume precision shafts and gear-set components.

About Suzhou Yidahui Precision Technology Co., Ltd. Injection Molding Services

The company sits in Suzhou and runs a compact but dense tool base with lathe units, CNC grind units and gear hob units. Their equipment depth suits injection mold work because motion parts such as shafts or worm units demand exact mold fit before any metal-cut step. That link between mold form and final size pushes them to keep each cavity in a strict shape range.

They focus on high-accuracy parts for auto, hydraulic and power-tool fields, so they build full chains from raw stock to finished shafts or sleeves. Tight QC checks help each unit hold smooth rotation and low noise once it enters a gearbox or motion stage. Find out more about Suzhou Yidahui Precision Technology injection molding machinery.

L-Tooling (HK) Co., Limited - Best for High-Precision Mold Parts and Multi-Process Plastic Units

Specification	Details
Core processes	Injection molding.
Key materials	Steel alloys, zinc alloys, high-grade plastics.
Tolerance range	Tight limits for medical, automation, PV hardware.
Facility size	10,000–30,000 ㎡.
Certifications	IATF16949, ISO 9001.
Industries served	Automation, medical devices, PV hardware.
Order volume strengths	High-run precision parts with multi-process depth.

About L-Tooling (HK) Co., Limited Injection Molding Services

The company sits in Dongguan and runs a broad tool base across mold sets, CNC units and die-cast lines. Their setup suits injection mold work because they control cavity design with high-axis CNC tools, which allows precise gate paths and clean surfaces on complex plastic units. That depth matters in medical and automation fields where each part must fit tight frames with no shift.

They support screw sets, die-cast parts, plastic units and stamp parts through four sub-factories, each one built for a specific class of hardware. Decades of mold experience from Taiwan, Hong Kong and mainland teams feed into their R&D group, so new parts move from concept checks into tool steel with no loss of detail. To learn more, read L-Tooling (HK) Co complete factory profile.

Xierge Precision Machinery Co., Ltd - Best for Precision Molded Parts and Motion-Grade Hardware

Specification	Details
Core processes	Injection molding.
Key materials	Steel alloys, plastics for auto and devices.
Tolerance range	Tight limits for valves, tool parts, optical hardware.
Facility size	5,000–10,000 ㎡.
Certifications	IATF16949, ISO 9001.
Industries served	Auto, consumer devices, medical gear, pumps and valves, toys.
Order volume strengths	Mid-to-high runs for precise molded and hybrid hardware parts.

About Xierge Precision Machinery Co., Ltd. Injection Molding Services

The factory stands in Yuyao with three decades of output in precision hardware. Their tool base suits injection mold work because motion parts such as valve units or axle hardware need exact cavity form before any metal-cut or pressure-fit step. This link forces tight control of mold shape, cool flow and part draft.

They run CNC STAR turn units from Japan, plus local CNC lathes and test tools from Japan and Germany. That depth backs up each molded part with clean cut, exact bore size and stable fit for auto or medical use. Learn more about Xierge Precision Machinery Co injection molding services today.

Taizhou Lynk & Co Rubber & Plastic Co., Ltd - Best for Automotive and Industrial Rubber Components

Specification	Details
Core processes	Rubber molding, compression molding, seal production.
Key materials	Natural rubber, nitrile, EPDM, silicone, fluorosilicone, neoprene.
Facility size	5,000–10,000 ㎡.
Certifications	IATF16949.
Industries served	Automotive, pneumatic tools, appliances, hydraulics, pumps and valves, PV, wind.
Key products	O-rings, brake-caliper seals, cushions, gaskets.
Strength	Tight dimensional stability for oil-, heat-, pressure-exposed components.

About Taizhou Lynk & Co Rubber & Plastic Co., Ltd. Injection Molding Services

The factory has been producing industrial rubber parts since 1994. This long run suits rubber molding work because seals and O-rings rely on stable compound mix, cure control, and compression-set resistance across thousands of cycles. The production flow they use lets them manage that mix closely before any molding step.

They process a wide range of industrial rubber compounds, which helps match each part to heat, oil, pressure or chemical loads. Their in-house lab runs full tests for rheology, tensile strength, thermal aging and oil resistance, giving them strong control over seal life and stability. They also apply stage-by-stage QC checks on each batch. Get the full details on Taizhou Lynk & Co Rubber & Plastic molding machinery.

Shaoxing Weili Plastic Products Co., Ltd - Best for Silicone Extrusion and Custom Rubber Parts

Specification	Details
Core processes	Rubber molding, compression molding, seal production.
Key materials	Natural rubber, nitrile, EPDM, silicone, fluorosilicone, neoprene.
Facility size	5,000–10,000 ㎡.
Certifications	IATF16949.
Industries served	Automotive, pneumatic tools, appliances, hydraulics, pumps and valves, PV, wind.
Key products	O-rings, brake-caliper seals, cushions, gaskets.
Strength	Tight dimensional stability for oil-, heat-, pressure-exposed components.

About Shaoxing Weili Plastic Products Co., Ltd Injection Molding Services

Shaoxing Weili focuses heavily on silicone and rubber R&D, which makes it well-suited for extrusion and molded sealing parts where material formulation directly determines performance. Their setup includes 25 vulcanizing machines and multiple extrusion lines, giving them stable control over cure cycles, hardness, and tensile properties during production.

Their catalogue covers both solid and specialty silicones, ranging from sealing rings and insulating profiles to kitchenware and industrial silicone units. The factory uses environmentally friendly processes and aligns its material output with RoHS and REACH requirements, which is helpful for export-grade applications.

Work With Trusted Injection Molding Manufacturers in China

The top injection molding companies for 2026 highlight the strength and maturity of China’s plastics manufacturing sector. You see stable mold control, automated molding cells, multi-shot capability and strict QC systems that keep cycle times efficient and tolerances consistent.

Each factory offers a clear capability profile, backed by modern tooling, experienced technicians and reliable downstream processes such as painting, laser marking, ultrasonic welding or assembly. Register your free account today on Haizol to get started.