How to deal with rust yellow of classical grey hemp stone？

Antirust of classical grey hemp processing:

1. Stone materials such as Ness crystal and silicon can be used to brush the surface of grey hemp 1-2 times. After the yellow rust spots are effectively removed, the stone materials can be cleaned with neutral water.

   
   

2. Place the drying room to dry the water, take out the stone and wait for its return temperature to between 5-40℃;

3. Use Ness protective agent to protect it on six sides, and not less than the front 2 times, side and back 3 times.The general natural temperature is above 28 ° C and the humidity is about 10 ° C, each interval time is not less than 20 minutes;

4, Wipe the residual curing agent with a clean cotton cloth to avoid hardening of the residual curing agent;

5, Static maintenance effect can be achieved in 8 hours, 24 hours to a week the effect is better.Dosage: 20-30m2/ L.