... .Propertieswhite or yellowish fine amorphous powder, smell-less, tasteless. The proportion is 4.42-4.45, does not dissolve in ... slightly soluble in ammonia, can dissolve inthe diluted acid and the sodium hydroxide. ZnCO3 57.5%,57%,56% TESTING CONTENTS ANALYSISITEMACTOR ... package in China,lowest price on the basis of good qualitymain market: Iran ,indonesia ,The United Arab Emirates Russia ,Brazil Greece ...