The predecessor of Jiangsu Jinjiayi Electronic New Materials Co., Ltd. was Changshu Haoxiang Electronic Co., Ltd., established in April 2003 with a long-standing presence in the electronic protective film industry. The company's production base is located at No. 3 Taihu West Road, Changshu-Sihong Industrial Park, Sihong County, Jiangsu Province; situated at the strategic intersection of the Huang-Huai-Hai Economic Zone and the Yangtze River Delta Economic Belt, it enjoys exceptional logistical advantages.
The factory, which began operations in July 2021 following a total investment of 150 million RMB, is a comprehensive high-tech enterprise integrating R&D, product design, manufacturing, and sales. Committed to building innovative R&D capabilities centered on customer needs and aligning with the growth of the eco-friendly new energy materials industry, the company has established a dedicated New Energy Materials Division focused on the R&D and production of specialized protective tapes for lithium batteries.
To achieve standardized, large-scale, and sustainable growth, the company has implemented an ERP management system, adopted dual international quality management systems, and continuously upgraded its automated production lines, aiming to become a professional provider of application solutions for new materials.
Factory Introduction
The company's production base is located in the Changsi Industrial Park in Sihong. The facility features standardized dust-free coating workshops and represents a total investment of RMB 150 million to create a modern, intelligent manufacturing plant, driving a comprehensive upgrade toward automated production.
The site houses multiple fully automated precision coating lines, supported by high-precision downstream processing equipment-such as rewinders and slitters-and advanced inspection systems. It also employs industry-leading RTO (Regenerative Thermal Oxidizer) waste gas treatment and recovery equipment; achieving a treatment efficiency of 99.8%, this system combines environmental protection with thermal energy recovery to ensure green, energy-efficient production. A digital management system has been implemented, utilizing ERP software to coordinate the entire workflow-from production and warehousing to quality control. The production environment is strictly controlled to minimize dust and impurities, meeting the stringent cleanliness standards required for high-end electronic and lithium-battery materials.
Additionally, the facility includes a dedicated zone for new energy materials, with a specialized business unit managing the mass production of protective films for lithium batteries; the hardware and software infrastructure fully complies with the rigorous production requirements for power and energy storage battery materials, enabling the stable fulfillment of large-scale, customized orders.
Our Product
All products comply with halogen-free environmental standards and cater to diverse application needs across the lithium battery, electronics, and photovoltaic industries, with support for custom development of non-standard sizes and specialized adhesive properties.
We are Protective tape and film experts
The company specializes in high-end protective tapes and films for the electronics and new energy sectors. Its core substrates include polyester and polyimide films, while its adhesive systems encompass acrylic, silicone, and rubber hot-melt types; the product lineup features standardized models such as 1012, 201, 202, 301, 5011, and 6011. Key flagship products include blue protective films for lithium batteries and polyimide protective films; the 1012 polyester model is designed for the lithium battery formation process, offering high-temperature resistance and residue-free removal. The 201 series polyimide (PI) tapes are widely used in applications requiring high-temperature resistance, electrical insulation, and residue-free performance. The 6011 rubber hot-melt tape is primarily used for securing battery cells within aluminum casings, offering excellent acid/alkali resistance and drop-impact performance. All products-including thickness, length, and adhesion-can be customized to meet specific requirements; standard thicknesses range from 0.02mm to 0.30mm, and adhesion levels span 0.02–30N/25mm.
Product Application
The company's protective film products primarily target three key sectors-new energy, electronics, and photovoltaics-with new energy serving as the core application area.
In the power battery segment, the products support the entire manufacturing process for automotive lithium-ion power batteries, energy storage batteries, and consumer lithium batteries; applications include cell formation protection, tab insulation, terminal fixation, and securing aluminum cell casings. For energy storage batteries, the films provide insulation and protection for large-format cells, enhancing safety by improving resistance to acids, alkalis, and impact (drop) damage.
In the electronics sector, the products are used for the insulation and surface protection of various electronic components, preventing issues such as scratches during production and contamination from adhesive residue. For the photovoltaic industry, the films serve as auxiliary materials for module insulation and temporary surface protection.
The products have passed rigorous testing-including electrolyte immersion and high/low-temperature weathering trials-and offer stable performance in high-temperature environments up to 260°C. They meet the production standards of leading power battery manufacturers, are compatible with all stages of lithium battery production, and effectively eliminate defects such as adhesive residue and casing corrosion.
Our Certificate
The company has established a comprehensive, standardized quality control system and secured multiple authoritative international quality management certifications. It fully implements the ISO9001:2015 quality management system and the IATF16949:2016 quality system specific to the automotive industry; production and quality inspection processes strictly adhere to these standards, ensuring product quality meets the rigorous entry requirements of the automotive power battery sector. The products' environmental performance has been verified against multiple international standards, with halogen levels complying with IEC61249-2-21, SONY SS-00259 (Revision 5), and EN-14582 directives; their halogen-free, eco-friendly nature aligns with global export requirements for new energy products. Equipped with a full suite of high-precision professional testing instruments and utilizing compliant testing procedures, the company guarantees that every batch meets performance specifications. Digital management via an ERP system enables full production traceability. The company holds supplier qualification status with leading new energy battery manufacturers, establishing long-term partnerships only after clients have rigorously vetted its corporate credentials.
Production Equipment
The production facilities feature multiple fully automated, precision coating lines; the main coating units utilize Siemens S7-1200 PLCs and Inovance servo systems to precisely control coating thickness in real-time, ensuring uniformity and stability. Rewinding and slitting equipment is equipped with Mitsubishi PLCs and servo systems from Japan, enabling high-precision control over tension and pressure, resulting in industry-leading flatness and dimensional accuracy. Environmental protection systems incorporate advanced RTO (Regenerative Thermal Oxidizer) units-utilizing Siemens controls and imported US alloy valves-to achieve a 99.8% exhaust treatment rate while simultaneously recovering thermal energy to reduce consumption.
Quality control is supported by a comprehensive suite of high-precision instruments-including Kejian testing equipment, Changchuang withstand-voltage testers, and Japanese Sanliang insulation/megohmmeter testers-along with X-Rite colorimeters. These tools enable full-spectrum performance testing covering insulation resistance, withstand voltage, peel strength, electrolyte resistance, high/low-temperature weatherability, and color difference, ensuring comprehensive pre-shipment verification of protective film performance and achieving fully automated, high-precision control across the entire process from production to inspection.
Production Market
Market positioning and customer base
The company's products are deeply rooted in the domestic new energy market, serving as key suppliers to leading power battery manufacturers such as CATL, BYD, and Gotion High-Tech. Its portfolio includes protective film materials for automotive power batteries, energy storage batteries, and consumer lithium batteries.
Regional layout and market coverage
Leveraging the strategic advantages of the Yangtze River Delta, the company established a Suzhou branch to expand into the electronics and photovoltaic markets in East China, while its main plant in Sihong serves new energy facilities across the Huang-Huai-Hai region; its domestic footprint spans major lithium battery industrial parks and electronics manufacturing bases nationwide.
Product advantages and delivery capabilities
Distinguished by high-temperature resistance, residue-free performance, eco-friendly halogen-free properties, and superior stability, the company's products have successfully penetrated power battery supply chains, handling both high-volume standardized orders and high-end customized projects. Backed by robust delivery and quality control capabilities, the company maintains long-term, stable supplies to top-tier battery manufacturers, securing a solid market share in the specialized lithium battery protective film sector and demonstrating the capacity for large-scale mass production and rapid response to customer customization needs.
Our Service
We specialize in the R&D, customization, production, and comprehensive support services for high-end electronic protective films, maintaining a complete service system that covers the entire lifecycle-from pre-sales to post-sales:
01
Precise Pre-sales Matching
Free sample testing, weather-resistance verification, custom non-standard processing, and scenario-based solution design to prevent application issues at the source.
02
Strict Quality Control & Delivery
Production in cleanrooms, end-to-end quality monitoring, consistent batch performance, and visual progress tracking; we guarantee mass-production consistency with samples, ensuring products are dust-free, residue-free, highly transparent, and flat.
03
Reliable Post-sales Mass Production Support
Round-the-clock technical support, lamination process guidance, rapid resolution of quality issues, and long-term batch optimization with priority restocking services.
