Company profile
Ningbo Leader Fluid Engineering Co., Ltd. is a professional manufacturer and exporter of seals and valves, our company has a modern machining center, CNC machine tools, machine tools and other equipment over 500 sets and a maximum machining diameter of 3.5 m of the large vertical lathe. Metallic materials physical and chemical testing, mechanical properties of mechanical tests, ultrasonic thickness measurement, nondestructive testing, spectroscopy, metal heat treatment, the safety valve full performance testing center, the spring tension and compression testing and other special equipment.

Main production
we have all kinds of safety valve, butterfly valve, ball valve, gate valve, globe valve, as well as non-standard valves, a dozen varieties, more than two thousand specifications. Can be designed and manufactured in accordance with the latest ANSI, API, DIN, BS, JIS, GB standard. Produced by the main body of the valve material WCB, WC1, WC6, WC9, ZGCr5Mo, ZG15Cr1Mo1V, CF8, CF8M, CF3, CF3M, 12CrMoV, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti; drive form manual, worm gear, electric, pneumatic, hydraulic, electro - hydraulic linkage; nominal diameter from DN10 to 3000 and 1/2 "to 36"; working pressure from 0.6 to 42.0 Mpa and 150Lb 2500 Lb; operating temperature of -196℃, 700℃. 
meanwhile our company can make all kinds of Single and Multi Spring Mechanical Seals, Cartridge Seals, FLYGT pump Mechanical Seal, Grundfos pump seals, ITT, Xylem pump seal, Flygt plug-in seal, Pumps, Gaskets, O-rings ,OEM and other sealing materials. For instance, rubber products corrugated pipe, rubber bellows-type, O-ring type. We Has formed the production of various kinds of mechanical seals, such as spacecraft machinery, metallurgy, printing and dyeing, foodstuff, auto industry, pharmaceutical and so on. Accordingly Our products can completely replace Johnrane, Burgmann, AES, Vulcan, Roten... 
surely is able to design, measure and produce all kinds of out-of-standard and special mining mechanical seals.

Applied fields of our production
The products are widely used in power plants, boilers, petroleum, chemical industry, urban construction, pharmaceuticals, chemical fertilizer, metallurgy, mining and other industries, some of the products instead of imports, applied to the key equipment of the national key projects. 

Operation philosophy
Our company has always adhered to quality survival, technology and development, has been developed for the collection of industrial valves developed, developing, manufacturing, testing, sales of high-tech enterprises.
We would like to sincerely cooperate with domestic and foreign users and do our utmost to supply quality products and service to meet users' demand and meanwhile establish with them a long-term friendly cooperative relationship.