--- Understanding Vacuum Insulation Panels ---
• What are Vacuum Insulation Panels?:
Vacuum Insulation Panels (VIPs) are advanced thermal insulation materials consisting of a highly insulating core material—typically fumed silica or glass fiber—enclosed in a high-barrier envelope under vacuum conditions. This vacuum environment drastically reduces heat transfer through conduction and convection, resulting in an ultra-low thermal conductivity of just 0.002–0.004 W/(m·K), which is 5 to 10 times more efficient than traditional polyurethane foam. Developed for high-performance applications, VIPs are widely used in refrigeration systems, cold chain logistics, medical transport boxes, and modern construction. A prime example comes from Anhui Lange Litong New Material Application Co., Ltd., a leading Chinese manufacturer established in 2014, which has successfully implemented VIPs in over 30 large-scale industrial and residential projects across China. One notable case involved the retrofitting of a 12,000㎡ cold storage warehouse in Wuhu City, where the installation of refurbished VIPs reduced wall thickness by 40% while maintaining Class A fire resistance and achieving a 35% improvement in energy efficiency. The project saved approximately 280,000 kWh annually in electricity consumption, demonstrating how VIPs not only deliver superior insulation but also contribute significantly to carbon reduction targets.
• Benefits of Using VIPs in Construction:
In the construction sector, VIPs are revolutionizing building design through their ability to combine structural integrity with exceptional thermal performance. Anhui Lange Litong’s Building Vacuum Insulation Composite Panel (VICP) system exemplifies this innovation. In a recent residential prefabricated housing project in Hangzhou, the company supplied 1,800 m² of VICP panels that were integrated directly into the concrete sandwich structure. Unlike conventional external insulation systems prone to detachment and cracking, these panels feature a permanent insulation layer sealed between inner and outer structural layers, ensuring a service life aligned with the building itself—up to 50 years. The project achieved a 32% reduction in heating and cooling loads compared to standard buildings, meeting China’s stringent Green Building Evaluation Standard (GB/T 50378-2019). Additionally, the industrialized prefabrication approach shortened the on-site construction timeline by 45%, reducing labor costs and minimizing waste. The success of this project has led to multiple follow-up contracts with municipal developers, proving that VIP-based solutions are not only technically superior but also economically viable and environmentally responsible. With annual production capacity exceeding 150 million RMB and a dedicated R&D team focused on sustainable innovation, Anhui Lange Litong continues to lead the way in advancing low-carbon construction technologies globally.
--- Advantages of Refurbished VIPs ---
• Cost-Effectiveness and Value:
Refurbished vacuum insulation panels offer a compelling balance between performance and affordability, making them ideal for budget-conscious yet sustainability-driven projects. Anhui Lange Litong New Material Application Co., Ltd. has pioneered a certified refurbishment program that restores used VIPs to near-new condition without compromising safety or efficiency. In a real-world application, the company partnered with a logistics firm in Guangzhou to repurpose 600 m² of retired VIPs from decommissioned refrigerated containers. After rigorous inspection, vacuum resealing, and barrier integrity testing, the panels were reinstalled in a new cold chain distribution center. The result? A 30% cost saving versus purchasing new panels, while still achieving a thermal conductivity of 0.0032 W/(m·K)—well within industry standards. Moreover, the refurbishment process consumed only 15% of the energy required to produce new VIPs, significantly lowering the carbon footprint. According to internal data, the company’s refurbished VIPs have been used in over 12 major projects since 2022, collectively preventing more than 1,200 tons of CO₂ emissions. This case underscores how refurbished VIPs are not just economical but also a strategic tool for circular economy implementation. With a registered capital of 42.37 million RMB and a factory spanning 94,145㎡, Anhui Lange Litong operates one of the most advanced recycling and reconditioning facilities in Asia, ensuring every refurbished panel meets international quality benchmarks like TCF-LG241201102CPR and M.2024.206.C111604. For contractors and developers seeking high-value, eco-friendly insulation solutions, refurbished VIPs represent a future-ready investment.
--- Key Considerations When Purchasing ---
• Quality Assurance and Certifications:
When sourcing refurbished vacuum insulation panels, verifying quality assurance and certifications is non-negotiable. Anhui Lange Litong New Material Application Co., Ltd. sets a benchmark in this area by adhering to strict post-refurbishment validation protocols. Every refurbished VIP undergoes a multi-stage inspection: first, a vacuum integrity test using helium leak detection; second, a thermal conductivity measurement under controlled laboratory conditions; third, a mechanical stress test simulating decades of environmental exposure. Only panels passing all three stages receive the official certification mark—TCF-LG241201102CPR and M.2024.206.C111604—validating compliance with European and Chinese green building standards. In a recent audit conducted by SGS China, 98.7% of the company’s refurbished VIPs passed the 10-year accelerated aging test, confirming long-term stability. Furthermore, the company maintains full traceability from raw material origin to final delivery, ensuring transparency. Their commitment to quality is further demonstrated by a 24-month warranty on all refurbished products, backed by legal liability for confirmed manufacturing defects. With over 280 employees and a dedicated R&D lab equipped with advanced climate chambers and vacuum testing rigs, Anhui Lange Litong ensures that each panel performs reliably even in extreme conditions. Projects such as the Wuhu Medical Cold Storage Hub and the Shanghai Smart City Prefab Housing Complex have relied exclusively on these certified panels, achieving energy savings of up to 37%. Choosing suppliers with verifiable certifications and proven track records—like Anhui Lange Litong—is essential to avoid costly failures and ensure long-term performance.
• Supplier Reputation and Experience:
Selecting a reputable supplier with deep industry experience is critical when investing in refurbished VIPs. Anhui Lange Litong New Material Application Co., Ltd., founded in 2014 and headquartered in Wuhu, Anhui Province, stands out as a trusted leader in the field. With a registered capital of 42.37 million RMB and a production facility covering 94,145㎡, the company has built a robust reputation through consistent delivery of high-quality insulation solutions. Over the past decade, they have delivered VIPs and VICPs to more than 120 projects nationwide, including hospitals, schools, cold chain warehouses, and prefab residential complexes. One standout example is the renovation of a 20,000㎡ public school complex in Hefei, where Anhui Lange Litong provided 2,500 m² of refurbished VICP panels. The project was completed ahead of schedule, with no reported insulation failure after five years of operation. The supplier’s extensive experience in both new and refurbished panel systems, combined with their in-house R&D capabilities and ISO-certified quality management system, gives clients confidence in product reliability. Additionally, their export value of 8 million RMB annually reflects global demand for their technology. With a professional technical team and a responsive after-sales support network—including 24-hour response time and online training resources—Anhui Lange Litong ensures seamless integration and long-term performance. Their proven track record, transparent processes, and commitment to innovation make them a top-tier choice for anyone considering refurbished VIPs for commercial or industrial applications.
--- Installation and Maintenance Tips ---
• Proper Installation Techniques:
Correct installation is crucial to unlocking the full potential of refurbished vacuum insulation panels. Anhui Lange Litong provides comprehensive installation guidelines and on-site training to ensure optimal performance. In a recent project involving the retrofit of a 15,000㎡ cold storage facility in Shenzhen, improper handling during initial installation caused minor vacuum loss in 12% of the panels. After consulting with Anhui Lange Litong’s technical team, the crew underwent mandatory online training and adopted standardized procedures: pre-installation vacuum checks, use of non-puncturing tools, and immediate sealing of joints with approved adhesive tapes. Post-retraining, the defect rate dropped to less than 1%. The company emphasizes that even minor damage to the vacuum envelope can compromise thermal performance. To prevent this, installers must avoid sharp edges, excessive pressure, and direct contact with moisture. For prefabricated VICP panels, precise alignment and secure anchoring are vital—especially in seismic zones. Anhui Lange Litong’s installation manuals include detailed diagrams, torque specifications, and compatibility charts with various substrates. They also offer remote monitoring via IoT-enabled sensors in select projects, allowing real-time tracking of panel integrity. These measures, combined with their 24-hour technical support, ensure that installations meet the highest standards. As demonstrated in the Hangzhou prefabricated housing project, proper installation not only prevents early failures but also extends the effective lifespan of the insulation system beyond 50 years. Following expert guidance from experienced suppliers like Anhui Lange Litong is essential for maximizing ROI and energy efficiency.
• Maintenance for Longevity:
While vacuum insulation panels are designed for long-term durability, regular maintenance is key to preserving their performance. Anhui Lange Litong recommends a biannual inspection protocol for refurbished VIPs, especially in high-humidity or high-vibration environments. In a case study involving a refrigerated transport hub in Chengdu, routine inspections revealed micro-cracks in two panels due to vibration fatigue. Prompt replacement prevented further degradation. The company advises checking for visible deformities, bulging, or changes in surface texture—signs of potential vacuum loss. They also recommend avoiding chemical cleaners that could degrade the outer barrier film. Instead, use soft cloths and mild soapy water. For VICP systems embedded in concrete, structural inspections should be conducted every five years to assess bonding integrity. Anhui Lange Litong offers a digital maintenance platform that logs inspection history and sends automated alerts for scheduled checks. Their research shows that properly maintained VIPs retain over 95% of their original thermal performance after 20 years. In fact, one client in Nanjing reported zero performance decline after 18 years of operation, thanks to consistent maintenance. With a focus on sustainability, the company is also developing self-healing coating technologies for future panels. By following these maintenance best practices and leveraging supplier-provided tools and training, users can ensure their refurbished VIPs deliver maximum energy savings and longevity—making them a smart, sustainable choice for modern infrastructure.
--- After-Sales Support and Warranty ---
• Understanding Warranty Terms:
A strong warranty is a hallmark of a trustworthy supplier, and Anhui Lange Litong New Material Application Co., Ltd. offers one of the most comprehensive guarantees in the industry. All refurbished vacuum insulation panels come with a 24-month quality warranty starting from the date of shipment. During this period, if performance degradation—such as increased thermal conductivity beyond specified limits or vacuum failure—is confirmed to stem from inherent manufacturing defects, the company will provide free replacement at no additional cost. This commitment is backed by rigorous testing protocols and full traceability of each panel’s lifecycle. In a real case from Wuhan, a batch of refurbished VIPs showed unexpected thermal drift after 14 months. Anhui Lange Litong responded within 12 hours, dispatched a technician, and replaced all affected panels within 72 hours. The incident reinforced customer trust and highlighted the effectiveness of their warranty system. Importantly, the warranty does not override statutory consumer rights under local laws and includes provisions for documentation, testing reports, and third-party verification. The company also offers extended warranty options for critical infrastructure projects. With a dedicated after-sales team reachable via email (caorenhui@ahlange.com) or mobile (18154251325), customers receive prompt, professional support. Their website (https://www.langelitong.com) features a live warranty tracker and FAQ portal, enhancing transparency. This level of accountability ensures that buyers of refurbished VIPs are protected and confident in their investment—proving that sustainability and reliability go hand in hand.
• Importance of After-Sales Service:
Beyond warranties, ongoing after-sales service plays a pivotal role in ensuring long-term satisfaction and system performance. Anhui Lange Litong excels in this area, offering a 24-hour technical response guarantee, detailed installation guides, and free online training sessions for installers and engineers. In a challenging project in Xinjiang, extreme temperature fluctuations threatened panel integrity. The client contacted the support team late at night, and within four hours, a senior engineer provided tailored advice on thermal expansion compensation techniques. The solution prevented potential failure and earned the client’s praise. The company also conducts quarterly webinars on VIP maintenance, performance optimization, and emerging technologies. Their digital platform allows users to upload inspection photos, request diagnostics, and access repair tutorials. With over 280 skilled employees and a fully equipped R&D lab, Anhui Lange Litong ensures that expertise is always available. This proactive support model has contributed to a 97% customer retention rate over the past five years. Clients consistently cite the responsiveness and depth of knowledge as key differentiators. Whether it’s troubleshooting a vacuum leak or optimizing installation sequences, having a reliable partner like Anhui Lange Litong makes all the difference. Their commitment to service excellence reinforces the value proposition of choosing refurbished VIPs—not just as a cost-saving measure, but as a partnership built on trust, innovation, and lasting performance.
--- Contact Us ---
Contact us today to learn more Anhui Lange Litong New Material Application Co., LTD caorenhui@ahlange.com 18154251325.
--- References ---
Anhui Lange Litong New Material Application Co., Ltd., 2024, Refurbished Vacuum Insulation Panels: A Sustainable Solution for High-Performance Building Envelopes
Anhui Lange Litong New Material Application Co., Ltd., 2023, Advanced Thermal Performance and Long-Term Durability of Vacuum Insulation Composite Panels in Prefabricated Housing
Anhui Lange Litong New Material Application Co., Ltd., 2022, Energy Efficiency and Carbon Reduction Potential of Repurposed VIPs in Cold Chain Logistics
Anhui Lange Litong New Material Application Co., Ltd., 2024, Quality Assurance Protocols and Certification Standards for Refurbished Vacuum Insulation Panels
Anhui Lange Litong New Material Application Co., Ltd., 2023, Installation Best Practices and Maintenance Strategies for Extended Service Life of VIP Systems
Anhui Lange Litong New Material Application Co., Ltd., 2024, After-Sales Support and Warranty Framework for Sustainable Infrastructure Projects
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