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Engineering &
Manufacturing

30+ Years of Tooling Expertise

— From Product Concept to Mass Production

The performance and quality of rubber and silicone components depend not only on material selection, but also on product design, tooling precision, and well-controlled manufacturing processes.

Backed by 30+ years of precision tooling and rubber & silicone manufacturing experience, our in-house engineering team supports customers from the earliest stages of product development. Through DFM (Design for Manufacturability) evaluation, we assess product structure, materials, tooling, and manufacturing processes based on your concepts, samples, or 2D/3D drawings.

This integrated approach helps balance product performance, manufacturability, development time, and cost before tooling begins.

From tooling development and trial production to molding, quality inspection, and mass production, each stage is integrated and managed by our internal team. This enables flexible support for prototypes, small-batch production, and stable volume manufacturing.

Production Process

From requirement confirmation to final shipment, Chieh Cheng integrates material preparation, manufacturing, quality control, and packaging within a streamlined production process to ensure consistent quality and reliable delivery.

01Requirement Confirmation & Drawing Review

02Incoming Material Inspection

03Material Preparation & Cutting

04Molding & Vulcanization

05Deflashing / Trimming

06In-Process Quality Inspection

07Post-Curing (as Required)

08Warehousing & Shipment

09Warehousing / Shipment

MANUFACTURING & INSPECTION CAPABILITIES

From product development and trial production to mass production, our in-house tooling, molding, post-processing, and inspection capabilities support stable manufacturing and consistent quality.

Our flexible equipment configuration allows us to select suitable manufacturing processes based on product size, structure, material characteristics, and production requirements.

#01Mold Engineering & Development

With more than 30 years of precision mold development experience, Chieh Cheng maintains in-house mold design and machining capabilities. From drawing evaluation and mold structure design to machining, mold trials, and production implementation, each stage is coordinated by our internal team.

By combining CNC precision machining with conventional milling, turning, and EDM capabilities, we can select appropriate machining methods for different mold structures and respond efficiently to design adjustments throughout the development process.

Tooling EquipmentTooling Equipment

CNC Machining Centers
Conventional Milling Machines
Conventional Lathes
EDM Machines
Sandblasting Equipment

#02Rubber & Silicone Molding Capabilities

Our facility is equipped with multiple molding technologies and a wide range of machine tonnages, allowing us to select suitable molding processes based on product dimensions, structure, material characteristics, and production requirements.

Primary Production Lines

Category	Equipment Name(EN)	Specification/Capacity
Material Preparation	Silicone Cutting Equipment
Material Preparation	Rubber Cutting Machine
Molding Equipment	Rubber Injection Molding Machine	260TON/360TON
	Vertical Rubber Injection Transfer Molding Machine	350TON
	Rubber Vulcanizing Extrusion Molding Machine	60TON/80TON 150TON/200TON
	Single Body Vacuum Oil Hydraulic Compression Machine	200TON
	Dual-Station Column-Type Vacuum Rubber Molding Machine	200TON
	Single Body Die-Removing Ejection Compression Machine	150TON / 80TON
	Twin Body Die-Removing & Ejection Compression Machine	100TON
	Single Body Oil Hydraulic Compression Molding Machine	350TON
	Single-Station Automatic Hydraulic Compression Molding Machine	80TON

#03Post-Processing Capabilities

After molding, appropriate post-processing operations are applied based on material and product requirements to enhance product properties, appearance, and production consistency.

Equipment	Key Function
Post-Curing Oven	Post-curing as required to enhance material properties and product stability
Automatic Deflashing Machine	Removes molding flash and improves product appearance
Screening Machine	Sorts and screens molded parts for efficient processing and quality control

#04Quality Inspection

Quality inspections are performed according to product drawings, dimensional tolerances, and customer specifications. Our measurement and testing capabilities support dimensional, geometric, and hardness verification to help ensure consistent product quality.

Equipment	Key Function
2.5D Automatic Video Measuring System	High-precision, non-contact dimensional and geometric measurement
Shore Durometer	Shore hardness testing for rubber and silicone products

Integrated from Development to Production

Chieh Cheng integrates in-house tooling, molding, post-processing, and quality inspection within a coordinated manufacturing process, helping customers move efficiently from product development to reliable mass production.

From concept to production — every step is engineered for manufacturability.