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Shanghai Junjingsai Automation Machinery Co., Ltd. is a specialized manufacturer dedicated to the research, engineering, and production of high-performance Radio Frequency (RF) plastic welding machines, high-frequency heat sealers, and custom automated processing lines—delivering innovative thermoplastic joining solutions for medical, automotive, outdoor sports, and industrial applications worldwide.
Customers: Creating unique value for customers, unchanged for a hundred years. Employees: Enabling employees' success, unchanged for a hundred years.
Shanghai Junjingsai Automation Machinery Co., Ltd. is one of China's leading RF welding machine manufacturers, specializing in the design, manufacturing, and customization of radio frequency (RF) welding machines and high frequency welding automation solutions.
Founded in 2002 and formerly known as Shanghai Junjingsai Packaging Machinery Co., Ltd., the company officially changed its name to Shanghai Junjingsai Automation Machinery Co., Ltd. in 2016. With more than 20 years of experience in plastic welding technology, Junjingsai focuses on the research and development, production, sales, and service of RF welders, RF heat sealers, high frequency welding equipment, and customized automated welding systems.
RF welding machines, also known as radio frequency welding machines or high frequency welding machines, use high-frequency electromagnetic energy to generate internal heat within thermoplastic materials, creating strong and precise welds for PVC, PU, TPU, and other industrial plastic materials.
With professional engineering capabilities and large-scale manufacturing capacity, Junjingsai provides customized RF welding and high frequency heat sealing solutions for automotive components, medical products, packaging, stationery, household products, outdoor sports equipment, inflatable products, and membrane materials.
Junjingsai products are exported to more than 35 countries and regions, with major markets covering Southeast Asia, the Middle East, South America, Africa, and other international markets.
Shanghai Junjingsai Automation Machinery Co., Ltd. operates manufacturing facilities across China, including production bases in Shanghai, Jiangsu, Chongqing, and Guangdong, with a total factory area of approximately 29,000㎡.
The company has:
As an integrated equipment manufacturer, Junjingsai is equipped with advanced manufacturing facilities, including:
The company manages the complete manufacturing process internally, including:
Customers are welcome to visit Junjingsai factories and experience the complete production process from raw materials to finished RF welding machines.
Shanghai Junjingsai provides a complete range of RF welding and heat sealing equipment, including:
Junjingsai develops welding solutions according to customers’:
The company supports OEM and ODM projects with customized options including:
Junjingsai RF welding machines are widely used in industries requiring reliable plastic welding and heat sealing solutions.
Applications include:
Junjingsai has accumulated extensive experience in automotive high frequency welding applications and provides equipment solutions for automotive component manufacturers.
Applications include:
Junjingsai high frequency heat sealing equipment supports medical product manufacturing applications requiring stable sealing quality and production reliability.
Applications include:
Junjingsai provides RF welding and heat sealing equipment for packaging manufacturers, including solutions for cardboard blister sealing machines and double blister sealing machines.
Applications include:
Junjingsai RF welding machines can process PVC, PP, and other thermoplastic materials used in stationery products, providing efficient sealing and forming solutions for manufacturers.
Applications include:
Junjingsai provides customized RF welding and heat sealing equipment for household products requiring consistent sealing, forming, and production efficiency.
Applications include:
Junjingsai RF welding machines are suitable for manufacturing a wide range of inflatable, waterproof, and flexible outdoor products made from PVC, TPU, PU, and other thermoplastic materials.
Shanghai Junjingsai has provided RF welding equipment solutions for customers in automotive, medical, packaging, and consumer product industries.
The company has served or cooperated with well-known enterprises including:
Through these industry projects, Junjingsai has developed strong capabilities in:
Innovation and quality control are key elements of Junjingsai’s manufacturing philosophy.
The company owns 25 patents and has obtained:
Quality management covers every stage of production:
Each RF welding machine is carefully tested before delivery to ensure stable performance and reliable operation.
Shanghai Junjingsai provides comprehensive support for customers worldwide, including:
The company provides efficient international service and supports multiple logistics solutions:
Available trade terms include:
Shanghai Junjingsai Automation Machinery Co., Ltd. welcomes global customers and partners to explore advanced RF welding machine and high frequency welding solutions.
With strong manufacturing capabilities, experienced engineering teams, and customized automation expertise, Junjingsai delivers reliable welding equipment solutions for automotive, medical, packaging, stationery, household, outdoor sports, inflatable, and membrane material applications.
Shanghai Junjingsai — Your Trusted RF Welding Machine Partner in China.
Adding value to our partners by providing reliable engineering solutions.
We develop sustainable business partnerships by providing long-life, efficient HF Welding solutions with our dynamic and experienced team in the high frequency machine industry.
