1.The vermiculite could well resist heat, cold and fire; it is antibacterial and capable of absorbing sound, while it can't coexist with acid. It could be burned in 800℃-1000℃ and changes its color to golden brown or silvery. And physical volume that inflation, equal to after the inflation originally physical volume of 8-20 times.From but made that material increase the ventilate air and the bibulous ability.
　
　2. The vermiculite's specific gravity is 130-180Kg/m3, pH is 7-9.It can absorb 500-650 litre water per ton.After fume disinfect ,the vermiculite can release the potassium, calcium and magnesium.

　3.About Horticultural Vermiculite, its main function to increase the ventilate air and the bibulous ability.Because of usage time that vermiculite is breakable, along with the extension of time usage, easily make lie the quality fine.

　4.Application:
　　a. The main materials of plant's medium, can mix with the peat, perlite etc..
　　b. The superstratum in the planting.
　　c. Adjusting the medium's PH value.