Plastic Injection Molding Service

30 Years Specialized in Injection Molding – From Product Design, Prototyping to Mass Production, YG Delivers One-Stop Turnkey Solutions to Global Clients with Proven Expertise.

What is Plastic Injection Molding Service

Plastic injection molding involves heating and melting plastic into a fluid. This fluid is then injected into a pre-made mold using high pressure. Once the plastic cools and solidifies, the mold is opened to create a precise and complex plastic part. Numerous plastic products, from small mobile phone cases to large automotive components, are manufactured using this process.

YG transforms this process into a solution. We do more than just “parts manufacturing”—we optimize your design for manufacturability, select materials that comply with international standards (FDA, RoHS), and deliver parts with tight tolerances (±0.001mm) on time, whether you need 1 prototype or 100,000 production units.

YG Plastic Injection Moulding Service

During the plastic injection molding process, companies often face communication barriers, product non-compliance with regional standards, difficulties in navigating small-batch trial production, and delivery delays.

With 30 years of industry experience, we offer comprehensive services, from mold design to mass production. Our deep understanding of customer needs and standards allows us to effectively mitigate various collaboration risks and ensure on-time delivery of satisfying products, whether for small-batch trial production or large-scale production.

01. Plastic Mold Design

YG’s mold designers will carefully review your drawings and requirements, detailing the design down to the production stage to prevent potential production issues.

02. Mold Making

YG’s professional mold engineers craft injection molds from durable steel (e.g., H13, S136, 718H). Strong, dimensionally accurate molds reduce the likelihood of failure during production.

03. Material Selection

We select materials based on the actual product’s intended use. While ensuring performance meets your standards, we avoid incurring extra costs for redundant features.

04. Prototyping

We’ll initially produce a small number of samples for your review, visually confirming details like dimensional fit and appearance. Once you’re fully satisfied, we’ll commence mass production.

05. Injection Molding Production

Mass production utilizes over 130 injection molding machines, rigorously monitoring parameters such as temperature and pressure for each part throughout the entire process to ensure product consistency and stability.

06. Quality Assurance

YG’s quality department will individually inspect each product for dimensional and appearance quality, eliminating the need for additional personnel for re-inspections.

01. Micron-level Precision Guarantee

03. Flexible Project Support

Advantages of YG Plastic Molding Services

02. Compliant Quality Management

04. Supply Chain Stability

Injection Molding Machines

K+

Daily Parts Production

Monthly Mold Making

Senior Technician

K+

Daily Product Assembly

Plastic Injection Molding Solutions for Various Industries

Plastic injection molding is a go-to manufacturing choice for high-quality parts, offering clear advantages: it reduces costs, cuts component weight by up to 50%, minimizes waste, and enables the creation of complex, custom shapes.

It fits all production scales—whether for high-volume runs, small-batch orders, or prototype development. We serve sectors such as consumer electronics, automotive, medical devices, smart home, industrial tools, and aerospace, backed by machines with a 600-ton clamping force and a maximum molding size of 700×850 mm to meet each industry’s specific needs.

Consumer Electronics

Aerospace Industry

Category	Components
Communication Devices	Phone Case, MacBook Cover, Tablet Case, Charger Housing
Wearable Tech	Watch Case, Smartwatch Bezel, Fitness Band Clasp, Earbud Charging Case
Audio-Visual Equipment	VR/AR Structural Parts, Speaker Grill Frame, Remote Control Buttons, Projector Lens Cover
Gaming Accessories	Game Controller Grip, Headset Ear Cushion Frame, Console Vent Grille, Charging Dock Base

Category	Components
Cabin Interior	Seat Frame Trim, Overhead Bin Latch, Air Vent Grille, Reading Light Cover
Avionics	Instrument Panel Bezel, Wiring Harness Clip, Radar Sensor Housing, Communication Equipment Shield
Structural Components	Aircraft Door Seal Retainer, Winglet Fairing Clip, Landing Gear Cover Bushing
Safety Devices	Emergency Exit Handle Grip, Oxygen Mask Housing, Fire Extinguisher Bracket, Seatbelt Buckle Frame

Automotive Industry

Medical Industry

Category	Components
Interior Trim	Dashboard Panel, Door Armrest Trim, Center Console Knob Base, Seat Adjustment Button
Exterior Trim	Bumper Clip, Rearview Mirror Housing, Grille Accent, Window Seal Gasket Base
Functional Components	Wire Harness Clip, Oil Reservoir Cap, Brake Fluid Cup, Sensor Housing
Electronic System Parts	EV Charging Port Cover, Instrument Cluster Bezel, Steering Wheel Button Pad

Category	Components
Diagnostic Equipment	Reagent Tube Rack, Sampling Cup, Testing Instrument Keypad, Cuvette Holder
Care Products	Infusion Pump Housing, Nebulizer Nozzle, Monitor Control Knob, Hemostat Handle Grip
Surgical Aids	Thermometer Shell, Blood Pressure Cuff Connector, Wheelchair Armrest Cover, Sterilization Case Latch
Therapeutic Devices	Trocar Sleeve, Surgical Tray Divider, Endoscope Handle Grip, Suture Pack Clip

Industrial Tools

Smart Home

Category	Components
Power Tool Components	Drill Handle Grip, Grinder Guard, Sander Pad Frame, Impact Wrench Housing
Measuring Instruments	Caliper Housing, Level Vial Holder, Gauge Face Plate, Tester Probe Cover
Machinery Parts	Conveyor Roller Sleeve, Hydraulic Cylinder End Cap, Pneumatic Valve Knob, Gearbox Seal Cover
Workstation Accessories	Tool Cabinet Drawer Slide, Bench Vise Handle Grip, Tool Belt Clip, Parts Bin Divider

Category	Components
Smart Controls	Smart Thermostat Housing, Voice Assistant Speaker Shell, Light Switch Panel, Remote Control Casing
Security Devices	Smart Doorbell Shell, Motion Sensor Cover, Camera Mount Bracket, Lock Keypad Frame
Environmental Regulation	Air Purifier Filter Frame, Humidifier Water Tank, Smart Valve Knob, Dehumidifier Control Panel
Cleaning Equipment	Robot Vacuum Shell, Dust Bin Assembly, Mop Attachment Frame, Filter Replacement Cover

Plastic Injection Molding Cases

View examples of YG’s injection molding projects—covering material selection, molding processes to mass production for different industries.

Thanks for Their Trust

Tom L.

from Tempest Clock

“My colleagues from large CE brands highly recommended YG. In our startup project, YG acted as a true partner, not "just a vendor." The well-managed team has a long-term vision, excellent communication, and quickly resolves issues. They're smart, professional, and fun. I'm deeply grateful to work with them.”

“We have established business relationship with YuanGuan since 5 years ago. No matter or order is big or small, we have always felt their exquisite, considerate service and got their best assistance every time. In our entire product supply chain, YuanGuan is one of our strategic partners in China. Here, we strongly recommend this company to all friends in the industry.”

Jimmy G.

from Biotricity

Andy L.

from Slimcase

“Slimcase has worked with YG on multiple important phone case projects. We are happy with the product quality because of the high-skilled engineers and up-to-date machinery. Moreover, support from the team is outstanding. YG is becoming our strategic development partner in China.”

We Precisely Tailor Your IInjection Molding Needs

Plastic Injection Molding Materials

YG offers a wide range of available injection molding materials, covering core categories such as general materials, engineering materials, specialty engineering plastics, and modified reinforced plastics.

We can precisely match materials to customer needs and support procurement from customer-specified suppliers to ensure optimal compatibility between materials and injection molded parts.

Plastic Injection Molding Post-Processing Services

Post-injection molding post-processing is crucial for achieving the ultimate performance and appearance of plastic parts. It optimizes surface texture, enhances durability, and meets industry compliance requirements.

YG offers post-processing services such as painting, pad printing, antimicrobial treatment, CNC precision machining, and wear-resistant/UV-resistant coatings to meet the plastic part needs of various industries.

Process Category	Specific Process Name	Core Function	Industry Compliance Requirements
Appearance Enhancement	1. Spray Coating (Painting)	Matte/high-gloss/metallic finish; anti-fingerprint, anti-yellowing	Automotive: IATF 16949; Electronics: RoHS 2.0
	2. Screen Printing/Pad Printing	Prints logos/graduations; precision ±0.1mm	Medical: ISO 10993-1; Food Contact: FDA
	3. Plastic Plating	Mirror-like metallic finish; strong adhesion	EU RoHS 2.0; Automotive: IATF 16949
Performance Enhancement	1. Wear-Resistant Coating	Reduces friction; scratch resistance (hardness ≥4H)	Medical: ISO 10993-5
	2. UV-Resistant Coating	Blocks ≥99% UV rays; anti-aging	Weather Resistance: ASTM G154
	3. Antibacterial Treatment	Antibacterial rate ≥99% (E. coli, etc.)	Medical: ISO 10993-1; Food Contact: FDA
	4. Sealing & Waterproofing (Dispensing)	IP65-IP67 waterproof rating; temperature resistance -40~120℃	Electronics: IEC 60529
Structural Finishing	1. CNC Precision Machining	Drilling/milling; precision ±0.02mm	Aerospace: AS9100; Medical: ISO 13485
	2. Deburring/Polishing	Removes flash/sharp edges; mirror finish Ra ≤0.2μm	Medical: ISO 10993-12 (particle-free)
	3. Insert Press-Fitting	Press-fits metal inserts; pull-out force ≥500N	Automotive: IATF 16949; Industrial: ISO 9001