About Us
Zhejiang sanmen seals factory (ZHEJIANG AILATE TRADING CO., LTD.) was founded in 1985 and has been manufacturing sealing products for more than 36 years. With profound technical foundation and abundant production experience, we have developed our own brand of Ailate, which enjoys a good reputation in both domestic and overseas market. 


Our factory covers an area of 25,000 square meters with 20,000 square meters as workshop and is able to produce 100 million pieces seals every year. During 2006, factoryworkforce rose to more than 230 employees, including 15 technicians and 5 senior engineers. Furthermore, our factory possesses of complete processing facility and precise instrument & equipment, which are mostly purchased from Germany and is in competetive position all over the world.

From 1995, we started to introduce technology, material and formula from Germany, USA and Japan so that we became nearly the largest manufacturer of sealing products in China in 1998. In addition, we have established long-term cooperation with several scientific organizations and high college laboratories to keep our factory one-up within China.

We are specialized in CPU, TPU, PTFE and NBR Sealing products, has 8 product lines, which allow us to produce over 30,000 different products. Our leading products are Hydraulic Seals and Pneumatic Seals, which are mainly used in automotive, mechanical engineering, stationary hydraulics, mobile hydraulics, pneumatics, fluid power engineering and electrical engineering, chemical industry, process engineering, oil and gas equipment, as well as agriculture industry. Besides, we also provide international standard sealing products including Parker, Trelleborg(B+S), NOK and Valqua and so on.

Our product is popularized by its admirable quality and professional design. So far, the main buyers are Ningbo Haitian Compressor Co., Ltd, Hefei Metalforming Machine Tool Limited, Zhejiang Hangcha Engineering Machinery Co., Ltd etc... Moreover, our products have been exported to more than 80 counties such as Italy, Spain, Canada, Malaysia, Syria, UAE and so on.

Much of our success is due to its high quality product control and on-time delivery service, and we will continue this tradition to meet technical and economic demands of customers by adopting zero defects management, strict production quality control, and continuous improving in production.

Welcome to place orders, we sincerely hope to do business with you!

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