are white or yellowish superfine powder,used to replace the zinc oxide produced with the direct process or the indirect process. 1. we are the real manufacturer of zinc oxide.2. we have our own factory.3.zinc oxide 99.7%/99.5%--70%4.Direct,Indirect, are white or yellowish superfine powder,used to replace the zinc oxide produced with the direct process or the indirect process.The nanometer zinc ...