Crafting Innovative Products
Plastics × Precision Injection Molding
Delivering Quality Manufacturing
Plastics × Precision Injection Molding
Services
Contract Manufacturing Services
We provide one-stop contract manufacturing services spanning product R&D, precision manufacturing, and post-processing.
Leveraging our professional integration capabilities, we help clients rapidly complete product development and seize market opportunities.
ODM Project
Focusing on innovative design and structural development, encompassing industrial design, mechanical engineering, rapid prototyping, and plastic mold development to shorten development cycles and ensure high-quality mass production.
OEM Project
Integrating engineering plastics with injection molding technology to meet the high-standard component requirements of the 3C, LED, semiconductor, medical, electronics, and industrial sectors.
Post-processing services
We offer diverse post-processing services including spraying, printing, ultrasonic welding, assembly testing, and customized packaging to optimize both product functionality and appearance.
Services
From concept to mass production, all in one place
Changrun Plastic Co., Ltd. has been dedicated to plastic injection molding and integrated product development since its founding in 1978, boasting over 40 years of extensive experience and comprehensive equipment. We are not only an injection molding manufacturer but also an integrated contract manufacturing partner with capabilities in design, R&D, manufacturing, and post-processing. We assist clients in rapidly transforming concepts into high-quality products and achieving stable mass production.
Whether it's end-to-end ODM development or high-precision OEM injection manufacturing, we deliver flexible, reliable custom solutions for diverse industries.
Introduction
Company Profile
Professional Injection Molding × Integrated Design × Precision Manufacturing × Over 40 Years of Trusted Brand
CHARNG RUHN PLASTIC CO., LTD. was founded in 1978, originally known as Cheng Gong Plastics Industrial Co., specializing in plastic coloring and compounding in its early years. In 1982, the company transformed and upgraded into a professional injection molding manufacturer and was officially renamed “CHARNG RUHN PLASTIC.”
With more than 40 years of hands-on experience, we serve a wide range of industries including traditional manufacturing, high-tech, and healthcare. We focus on delivering precision plastic injection products and integrated product development services, covering:Lighting housings, optoelectronic components, electronic parts, manual insert-molded products, semiconductor jigs, specialized functional components, water filter valve parts, and medical device housings and components.
Customized Product Development and Design Services
With a professional team and extensive experience, we provide one-stop customized solutions covering product design > mold development > injection mass production > post-processing integration. Our services help clients bring ideas to life quickly and enhance product value.
Why book with us
Our Advantages
Quality Assurance
ISO 9001 Certified, Ensuring Reliability and On-Time Delivery.
Industry Trust
Over 40 Years of Expertise, Serving Clients Across Diverse Industries.
Flexible Small-Batch Production Capability
Capable of Handling Small-Batch, High-Mix Production and Complex Structures
Integrated Design and Manufacturing
Comprehensive Support from Concept Design to Mass Production
Diverse Cross-Industry Experience
Covering applications in optoelectronics, electronics, mechanical components, and medical fields.
Our Work
Finished Product Display
Selected actual production cases showcasing diverse applications including optoelectronic components, medical enclosures, and electronic mechanical parts, demonstrating Changrun Plastics’ professional injection molding and manufacturing quality.
Contact Us
Contact Information
Whether you have product development needs, inquiries about injection molding manufacturing partnerships, or any technical and service-related questions, we welcome you to contact us.
The Changrun Plastics team will provide you with the most appropriate assistance and advice with professionalism, integrity, and efficiency.