2010 - 2019: Over nearly a decade, we have collaborated extensively with leading research institutions, including Lanzhou University of Technology’s National Key Friction Laboratory, Ningbo Institute of Materials, East China University of Science and Technology, and Shanghai Institute of Ceramics. Together, they conducted in-depth analyses of low-leakage graphite sealing technology and the underlying causes of sealing failure, striving to overcome technical challenges and enhance product quality.

2019: We obtained our first TÜV-witnessed API 622 certification, signifying the achievement of international recognition for its low-leakage graphite sealing technology.

2019 - 2024: With third-party verification from TÜV SÜD and TÜV Rheinland, we continued to advance and secured multiple authoritative certifications, including API 622, ISO 15848-1, TA-LUFT, API 624 and API 641.

2025: Under TÜV Rheinland's witness, our company obtained ISO 15848-1 CC3 certification, further solidifying its technological leadership and industry position in valve manufacturing.