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LYHY was officially established in 1998 and obtained lSO-9001 certification in 2002.Over the years, LYHY has fully implemented 5S management concept, established a professional, standardized and scientific production line, and continuously improved its brand influence.Nowadays,LYHY is a national technology-based small and medium-sized company, a national high-tech company, manufacturing products including quick connecting pneumatic pipe fittings, throttle valves, check valves,brass quick push in & push on pneumatic pipe fittings, stainless steel connectors, mufflers, PU&PA tubes etc. with various types, convenient installation, simple and dexterous, widely used in the fields of mechanical equipments such as priting, welding, raiway, medical industry,as well as in the field of automation industries such as electronics and automobiles.We have sales locations in Ninabo, Chanazhou and Xi'an,customers spread to overseas.
Rigorous, responsible and innovative are the values of LYHY. Pursuing perfection and striving for success is the declaration of LYHY.Professional production and sincere service,LYHY provides comprehensive quality services for every customer. Continuously innovating and standind at the forefront,LYHY is with responsibility and commitment as the oar to set sail for dreams.

CEJN-Product GmbH is the German sales subsidiary of CEJN, the Swedish manufacturer of quick couplings. CEJN's quick couplings are suitable for a variety of applications and industries. Our product range includes quick couplings for hydraulics, fluids, compressed air, breathing air, and thermal management.