In the rapidly evolving landscape of global electronics manufacturing, the term "Under Packaging" refers to the critical functional materials that support, protect, and facilitate the assembly of surface-mount devices (SMD) and delicate electronic components. As a leading Wholesale Under Packaging Supplier, Jiangsu Yongjia Electronic Materials Co., Ltd. understands that these materials are not merely consumables; they are the backbone of high-speed SMT (Surface Mount Technology) production lines.
The global market for electronic packaging materials is witnessing an unprecedented surge, driven by the miniaturization of semiconductors and the expansion of the Electric Vehicle (EV) and 5G sectors. Todayβs industrial requirements demand tapes with exceptional thermal stability, precise adhesive properties, and anti-static capabilities. Our role as a specialized factory is to provide the high-performance heat-seal cover tapes and acetate cloth tapes that ensure zero-defect assembly processes for tier-one manufacturers worldwide.
The semiconductor packaging material market is shifting toward "System-in-Package" (SiP) and 3D packaging. This transition requires carrier and cover tapes that can handle smaller, thinner components with higher precision than ever before.
Environmental sustainability and ESD (Electrostatic Discharge) protection are the two primary trends. Manufacturers are now seeking recyclable materials and "halogen-free" flame retardants to meet stringent global environmental standards like RoHS and REACH.
International buyers from Southeast Asia, Europe, and North America are increasingly looking for reliable Chinese factories that offer a balance of R&D capability and cost-efficiency. Supply chain resilience is now the top priority for global procurement officers.
Established in June 2007, we have dedicated over 18 years to the core track of functional tapes. Located in the industrial hub of Nantong, our 16,000-square-meter facility is a testament to Chinese manufacturing excellence. With advanced R&D laboratories and scientifically planned production workshops, we have emerged as a comprehensive service provider with significant influence in the electronic materials industry.
Our commitment to being a Wholesale Under Packaging Factory of choice is backed by our rigorous quality control and deep understanding of the semiconductor lifecycle.
Year Established
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Expert Employees
Industry Experience
Engineered for Precision, Stability, and Reliability
Standard and enhanced high-temperature series designed for high-speed peeling and consistent seal strength.
No heat required. Ideal for heat-sensitive components, providing a secure bond and easy application.
Available in flame-retardant and standard versions, with or without release liners for insulation and bundling.
High dielectric strength and chemical resistance for electrical insulation applications.
High tensile strength and heat resistance for heavy-duty industrial reinforcement.
We provide OEM/ODM services to match your specific carrier tape requirements and peeling force standards.
As the global manufacturing center, China offers unparalleled advantages in the electronic materials sector. Jiangsu Yongjia leverages these to provide superior value to our international clients:





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Read MoreWhen searching for a Wholesale Under Packaging Supplier, procurement managers must evaluate several technical parameters. First is the peeling force stability. For cover tapes, the force required to peel the tape from the carrier tape must be consistent to prevent "tombstoning" or component ejection during SMT. At Jiangsu Yongjia, we utilize automated tension control systems to guarantee this stability across every roll.
Another factor is the surface resistivity. In ESD-sensitive environments, under packaging materials must dissipate static charges effectively. Our conductive and dissipative tapes are tested to meet the most stringent semiconductor standards. Furthermore, for acetate cloth tapes, the focus is on flame retardancy and adhesive residue. Our specialized formulas ensure that even after long-term exposure to heat, our tapes leave no residue on the components, maintaining the integrity of the PCB assembly.
In conclusion, the right supplier is not just a vendor but a partner who understands the intricate requirements of the electronics industry. With 18 years of experience, Jiangsu Yongjia Electronic Materials Co., Ltd. stands ready to support your global supply chain with premium materials, expert R&D, and reliable wholesale manufacturing capacity.