4a zeolite is widely used in detergent making. Our annual production is 80, 000 tons and 60% for exportation Specification: standard our result Calcium exchange ability (mgcaco3 / gzeolite) 295 min 302 Whiteness 96% min 97 Ph value 11. 3 max 11. 0 Loss drying (% ) 22 max 21 We assure: Competitive price, excellent quality, punctual delivery Your quick enquiry is highly appreciated