Founded in 1974, Haimen Changlong Instrument Co., Ltd is the largest manufacturer producting"Jiangfan Brand" microscope slides and cover glass and Laboratory Glassware and related ***** is located in the centre of Haimen, along the Yanzi River, nearby Shanghai city.With the advance equipment and strict management, Haimen Changlong Instrument Co., Ltd can produce 5.0 milloon boxes of microscope slides and 3.0 milloon boxes of cover glass ablity, it is the earliest instrument company which get the certificate of ISO9001 and certificate of CE, the products are widely used in medical, scientific research and lab institute and are well received in USA, Europe, Australia and Southern Asia."Quality First, Customers Satisfaction" is the tenet of our company.