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HM is an international company dedicated to designing, manufacturing, and selling high-quality mechanical seal products.

We are committed to providing global clients across various industries with high-performance mechanical seals, including cartridge seals, conical spring seals, wave spring seals, parallel spring seals, multi-spring mechanical seals, and bellows mechanical seals made from different materials. Our products meet the sealing requirements of vertical pumps, pipeline pumps, end-suction pumps, deep well pumps, submersible sewage pumps, chemical pumps, and other applications. With a team rich in industry experience, we strive to deliver customized products and exceptional technical support to our customers.

Whether for standard mechanical seals or specialized custom solutions, HM has earned customer trust through laboratory stability tests and the establishment of multi-layered service guarantee mechanisms. Our commitment to quality has made us a reliable partner in the global mechanical sealing industry.

Corporate Culture

Innovation-oriented

We encourage innovative thinking and continuously seek improvement and breakthroughs to meet customer needs and lead industry development.

Quality and Reliability

We are committed to pursuing excellence in quality and reliability, ensuring that our products and services always meet the high standards and expectations of our customers.

Customer-centric

We always prioritize customers, listen to their needs, provide customized solutions, and ensure customer satisfaction remains paramount.

Team Collaboration

We value teamwork, encourage collaboration and communication among employees to achieve common goals and promote company development.

Continuous Improvement

We encourage employees to continuously learn and develop, constantly improving our products and business processes. We actively seek feedback and take measures to enhance our performance and efficiency to meet market changes and customer needs.

Social Responsibility

we are committed to environmental protection and social responsibility. We take sustainable development measures to minimize our impact on the environment and actively participate in community activities to give back to society.

Development History

2003

The company was officially established in Hangzhou, specializing in the research, development, and production of industrial static seals. This laid a solid foundation for subsequent technological advancement and market expansion.

2005

The Hangzhou Huanghu plant was completed and commenced operations, further expanding production scale and enhancing product supply capacity.

2006

Successfully obtained ISO 9001 Quality Management System certification, establishing a stringent quality control system that covers rubber material formulations and production processes. This ensured systematic quality assurance for products.

2011

Actively expanded the boundaries of material technology by developing PTFE products and related improved variants. This significantly enriched the static seal product portfolio and strengthened competitiveness in the high-end materials sector.

2012

Successfully developed the airtight blocking cable, which became the preferred supporting product for high-end safety submersible pumps in China. This demonstrated the company's leading expertise in sealing safety and reliability.

2014

Leveraging years of accumulated static sealing technology, the company strategically expanded its product line into the dynamic sealing field. The launched "Hongmi Mechanical Seal" series could adapt to various complex working conditions, delivering exceptional performance and establishing initial brand influence.

2021

The company was honored with the titles of "Zhejiang Provincial Sci-Tech Enterprise" and "National High-Tech Enterprise," having accumulated 23 utility model patents. Its R&D innovation capabilities and core technological expertise gained national recognition.

2022

The new intelligent manufacturing facility in Huzhou, Zhejiang, officially commenced operations, and Zhejiang Hongmi Technology Co., Ltd. was established. Through automation, systematization, and intelligent management, the company achieved comprehensive upgrades in manufacturing capabilities and operational efficiency.

2025

Successfully obtained ISO 14001 Environmental Management System certification and ISO 45001 Occupational Health and Safety Management System certification. Additionally,Zhejiang Hongmi Technology Co., Ltd. was once again recognized as a "National-Level Sci-Tech Enterprise" and "National High-Tech Enterprise." After 22 years of dedicated development and continuous innovation, the company has successfully transformed from a regional manufacturer into a robust global provider of static and dynamic sealing technology solutions, consistently driving industrial sealing technology advancements and industry progress with meticulous craftsmanship.

We are committed to building a forward-thinking culture of innovation that not only responds to market demands but also aims to define the future of the industry. By establishing systematic innovation mechanisms, we continuously achieve technological breakthroughs and product iterations, creating value for customers that exceeds expectations.

Technical Expertise and R&D Capabilities

Our professional R&D team, led by seasoned experts, is dedicated to the exploration and application of cutting-edge technologies. With profound knowledge accumulation and sustained investment in R&D, we ensure that our new products not only possess strong market competitiveness but also embody the technical depth and independent intellectual property rights needed to lead industry trends.

Quality Control and Reliability

Quality is our cornerstone. We have built a comprehensive quality management system that spans the entire product lifecycle, implementing precise inspection processes that far exceed industry standards. All of this serves one goal: to ensure that every product delivered demonstrates exceptional performance and undeniable reliability, providing customers with peace of mind.

Customer Service and Solution Capabilities

We firmly believe that true value lies in solving customers' problems. Therefore, we go beyond simple transactional relationships and strive to become strategic partners for our clients. By deeply understanding customer needs, we provide customized, comprehensive solutions and full-cycle professional services, ensuring that our customers' success is our success.

Honorary Qualifications

Zhejiang Hongmi Technology Co., Ltd. boasts 22 years of experience in the research, development, and production of mechanical seals, with over 20 inventions and patents. The company has obtained ISO 9001 and ISO 14001 certifications, among others, and has received numerous provincial and municipal awards and recognitions. Hongmi is one of the few mechanical seal manufacturers in China with the capability to fully independently develop and manufacture mechanical seals tailored for specialized equipment.