Non-ionic cellulose ether, which is made from natural polymer cellulose by etherification reaction, is an odorless, tasteless and non-toxic white powder, swelling into a clarified or slightly turbid colloidal solution in cold water. With thickening, dispersion, emulsification, film formation, suspension, adsorption, surface activity, moisture retention and colloidal properties, so widely used in building materials, petrochemical, ceramics, textile, daily chemical, synthetic resins, coatings and electronics industries.