Tonice(NB) Mechanical Manufacturer Co.,Ltd is located in Jiangdong District, Ningbo city, Zhejiang province. and professionally design and manufacture mechanical seals. Arigid quality system has been established and adhered to for areas such as product design, mannufacture, sales and service etc. and more A new industy have also been set for protuduce performance, reliability of usage and prices & services ect by utilizing advanced material, technoligies and equipment. pls contact us.