Product description     Silver is relative stabile matter and  does not dissolve into water，the antimicrobial and sterilization of this product does not so strong and wide by itself.  This problem is not to be resolved in macro world, so we must look for results in micro world.  Nano technology is a new science and technology that bases on three basic sciences of quantum chemistry, datum chemistry,  biochemistry. Through making  the silver material into micro world and get it to 10 -9 m nano degree,  Abundant use its surface effect and utilization which have many kinds of new special characters and effect are different with macro world, Realizing its characteristics of durable effect, broad spectrum, strong antimicrobial, good stability and has strong reflection after it meets water. Due to the surface of nano silver and capillary activity is becoming much bigger, so that it has special antimicrobial and sterilization functions.    Product Nano silver powder（25%）  Analysis and Check Result   Appearance Block powder Connatural （Ag） Min25% PH 7.0±0.5 Particle diameter Max20nm Supplement Max2% Conductivity Passed Density 2．07 Color different Passed Water and Ethanol Passed     Product Feature   Particle diameter less than 10nm Much bigger surface proportion (90 m 2 /gram) Dispersed and well proportioned, safety and credibility Producing  different silver concentration powder Producing much high concentration colloid silver and many kinds of solution (5 - 10wt%) It has very high purity and does not yield impurity when use it Nontoxic and no pollution to environment Antimicrobial, sterilization, preventing mildew,  deodorization and releasing infrared,  etc. Due to the osmosis of nano particle has the merit of anti-washing, it can make into transparent products