Can quartz slabs be stored outside

Artificial quartz should be ok to use at outdoors, for example, some windowsills are made of it.but for stored outdoor, it is not recommend, as there is resin material ,even very small amount, if stored at outdoor for long time, it may get color change or other problem.  

Artificial quartz stone is a composite material with a dense and non-porous surface manufactured under vacuum conditions, which is very suitable for functioning in complex environments. Its quartz surface has excellent corrosion resistance to acid and alkali in the kitchen. Liquid substances used in daily use will not penetrate into its interior. Liquids placed on the surface for a long time only need to be wiped with clean water or ordinary household cleaners with a rag. , and if necessary, scrape off the residue on the surface with a blade. The shiny and bright surface of synthetic quartz stone has undergone dozens of complicated polishing processes, so it will not be scratched by a knife or shovel, or penetrated by micro-liquid substances, and will not cause problems such as yellowing and discoloration. For daily cleaning, only water is needed. Just rinse it off, it's simple and easy; even after a long period of use, the surface is as bright as a new countertop, requiring no maintenance. 

Artificial quartz stone is composed of more than 90% of natural quartz and about 10% of colorant, resin and other additives for adjusting bonding and curing. It is a sheet processed by negative pressure vacuum, high frequency vibration molding, heating and curing (the temperature depends on the type of curing agent. 2.5g/cubic centimeter) has the characteristics of wear resistance, pressure resistance, high temperature resistance, corrosion resistance and anti-penetration that other decorative materials cannot match.