About Us
About LeakProof
Established in 2022, Shanghai Maijing Industrial Co., Ltd. is a high-tech enterprise dedicated to the R&D, manufacturing, and global supply of premium chemical adhesives. With a steadfast commitment to the sealing and protection industry, we have launched our specialized waterproofing brand, LeakProof. Unlike general adhesive suppliers, LeakProof focuses deeply on the waterproofing sector. We consistently push the boundaries of technology to engineer high-performance solutions—such as our advanced single-component polyurethane and neutral silicone sealants—specifically formulated to withstand extreme weather conditions and rigorous industrial applications.
Our Core Advantages
Uncompromising Specialization: We channel 100% of our expertise into waterproofing and sealing technology, ensuring every product delivers exceptional, long-lasting reliability.
Advanced Tech Innovation: By continuously upgrading our chemical formulations, we provide next-generation solutions that remain highly resilient, elastic, and leak-proof under severe environment and temperature fluctuations.
Global Standards & Quality Control: Our production follows stringent international quality management systems, utilizing precision manufacturing lines to guarantee consistent, top-tier batch quality for overseas buyers.
Company Timeline
2020 – The Formulation R&D Phase
2021 – Technical Breakthrough & Trial Production
2022 – Official Incorporation & Strategic Launch
2024 – Brand Evolution: "LeakProof" is Born
2026 – Digital Integration & Global Expansion
Our R&D & Quality Control
We engineer high-grade polymer resins at a molecular level. Rigorous purification ensures absolute ingredient purity and superior long-term aging resistance.
Engineered for extreme environments. Our optimized formulas retain perfect elasticity and zero shrinkage under severe temperature cycles.
Optimized rheology guarantees smooth gun extrusion, perfect sag resistance on vertical surfaces, and ideal curing speeds for modern construction.
We deeply analyze bonding performance across concrete, glass, and metals, eliminating potential adhesion risks before leaving the factory.
Every batch undergoes grueling reliability tests—including high elongation and accelerated aging—to guarantee an uncompromising waterproof barrier.
Certifications
Factory Advantages
Advanced & High-Efficiency Production
Automated production lines coupled with precision control instruments enable high-standard operations from raw material feeding to finished product filling, ensuring high efficiency and precision manufacturing for large-scale orders.
Molecular-Level R&D & Custom Formulations
Focusing on molecular-level research of high-performance polymer resins and dynamic thermal stability optimization, we deliver tailored sealing and adhesive solutions to meet extreme climates and specific engineering requirements worldwide.
Rigorous Batch-by-Batch Testing
Every batch undergoes a comprehensive series of rigorous laboratory reliability tests—including high tensile elongation, accelerated aging, and cohesive strength analysis—delivering a data-proven commitment to quality with full traceability.
Global Standards & Authoritative Certifications
Operating under fully standardized factory management frameworks, our products strictly comply with mainstream global industry criteria, fully certified by ISO 9001 and verified by authoritative third-party testing like SGS.
Robust & Secure Raw Material Supply
We collaborate deeply with premium global chemical suppliers, implementing high-standard pretreatment and purity control for core precursors to guarantee long-term stability and consistent supply for bulk sourcing.
Flexible Delivery & Global Logistics Network
Supporting flexible MOQs and full-process visual order tracking, we optimize international logistics and warehousing networks to reduce lead times, ensuring a seamless cross-border sourcing experience for global buyers.