·Company Name: Ningbo LYHY Mechanical & Electrical Technology Co., Ltd.
·Background: The brand originated in 1998, and the company was officially registered in 2014. Located in the Jishan Industrial Park, Fenghua District, Ningbo City, it is a national high-tech enterprise and a technology-based SME specializing in the R&D and manufacturing of pneumatic fittings and components.
·Address: No. 155, North Ring Road, Jishan Industrial Park, Xikou Town, Fenghua District, Ningbo City, Zhejiang Province
·Core Business: Specializing in the R&D and production of quick‑connect pneumatic fittings, quick‑tightening fittings, nickel‑plated copper fittings, stainless steel fittings, throttling valves, check valves, silencers, PU/PA air hoses, and a full range of pneumatic pipeline accessories. The company holds independent import and export rights, serving both domestic industrial supply chains and overseas export orders, and offers standard products as well as one‑stop OEM/ODM customization solutions.
·Product Application Fields: Widely used in automation equipment, packaging machinery, medical devices, printing, welding, rail transit, electronics, automotive equipment, construction machinery, and other industries, with products suitable for diverse operating conditions worldwide.
·Corporate Qualifications: Certified under the ISO 9001 quality management system and holding multiple structural patents; products comply with export‑related environmental standards such as RoHS; implements 5S lean production management; a general taxpayer, capable of providing complete customs clearance documentation for international trade.

1. Manufacturing Strength
· We operate our own machining workshop, injection molding workshop, and automated assembly workshop, equipped with core CNC machining equipment, injection molding machines, and fully automatic assembly lines. This enables end-to-end independent production—from machining to injection molding, assembly, and testing—reducing reliance on external subcontractors and ensuring autonomous control over quality, delivery schedules, and costs.
· We implement a flexible production model: capable of handling large-volume bulk orders for international brands while also supporting small-batch trial orders from overseas customers. We maintain safety stock of best-selling standard connectors to ensure rapid delivery. Furthermore, we comprehensively apply 5S workplace management to guarantee consistent product quality and high production efficiency across batches.
2. Core Technology Highlights
① Precision Sealing and Low-Leakage Technology: We independently optimize sealing structures, achieving high-precision matching of sealing rings and maintaining low leakage rates under both high- and low-pressure conditions. Even after tens of thousands of insertions and removals, the seals remain stable and reliable.
② High-Precision Multi-Standard Thread Machining: We expertly process globally mainstream thread types such as G, NPT, and PT, rigorously controlling thread tolerances to prevent stripped threads or poor engagement, ensuring compatibility with pneumatic equipment worldwide.
③ Diverse Material Processing Capabilities: Our products utilize precision nickel-plated copper, modified high-strength engineering plastics, and 304/316 stainless steel, making them suitable for ordinary operating conditions, harsh coastal environments with high salt spray, and chemically corrosive settings.
④ In-House Mold Development Capability: We independently research and manufacture molds, enabling rapid customization and modification to shorten new product development cycles.
⑤ Self-Developed Product Testing Laboratory: Equipped with comprehensive testing capabilities—including air-tightness, pressure burst resistance, insertion/removal life, salt-spray corrosion, and high/low temperature cycling—we conduct random sampling inspections on every batch, ensuring full traceability of product performance.
3. Quality Control System
We strictly enforce a comprehensive quality inspection process covering IQC incoming material inspection, IPQC in-process inspection, FQC finished-product inspection, and OQC outgoing shipment inspection. We maintain stringent control over factory defect rates, support third-party customer inspections, and provide complete certification packages for all exported products, meeting EU RoHS and REACH environmental requirements to mitigate compliance risks in overseas markets.
4. R&D Innovation Strength
We have established an enterprise-level R&D center holding multiple patents related to pneumatic connectors. We continuously iterate and develop new products, including high-pressure-resistant, corrosion-resistant, high-flow, and specialized connectors for new energy equipment. Additionally, we offer ODM custom development based on customer drawings or samples, encompassing structural modifications, material upgrades, and tailored solutions for specific operating conditions.
5. Export Supply Chain Strength
We hold our own import and export licenses and are well-versed in international trade terms such as FOB, EXW, and CIF. We can provide complete customs clearance documentation, including packing lists, invoices, and certificates of origin. We also offer neutral export packaging, customer-customized color boxes, and reinforced palletized shipping solutions. Our English-speaking business team efficiently coordinates with overseas clients.

IV. Comprehensive Service System
1. Domestic Customer Service
· Standard ready-to-ship products are dispatched quickly, with technical support available for product selection.
· We support customizations based on customer samples or drawings, offering laser marking and customized packaging.
· Technical drawings and parameter sheets are provided, along with post-sales technical assistance.
2. Overseas Export Customer Service
· Sample Services: We provide sample testing and support small-batch trial orders, helping customers reduce upfront procurement risks.
· OEM/ODM Customization Services: We offer laser engraving of customer logos and customized packaging; develop new products according to customer drawings or samples, adjusting materials, thread types, structures, and sealing solutions.
· Technical Support Services: We supply 2D/3D drawings and complete product specification sheets, facilitating product selection and market launch for overseas customers.
· End-to-End Order Tracking: We synchronize information throughout the entire order process—from quotation and scheduling to production, quality inspection, shipment, and logistics coordination.
· After-Sales Assurance: Each batch undergoes thorough pre-shipment inspection; we respond swiftly to quality issues and provide remote technical solutions for troubleshooting.
· Compliance Support: We furnish complete export certificates and customs clearance documents, ensuring compliance with market access requirements in various countries.