crystal/acrylic ashtray

crystal ashtray,acrylic ashtray,glass ashtray Material: K9 Size: from 10×10cm to25×25cm Packing: polybag+inner box Quality: highest transparency and toppest polish How to clean and maintain crystal products? Generally speaking,using soft cloth clean it is ok. If the dirty is worse,putcrystal products incleaning warter,then use brush. After that,take it out and dry it.When you see it seems half dray,just use soft cloth is ok. Do not use any acid,alkaline and alcohol to wash. Beside,reduce heating time as mush as possible,to avoild oxidation of yellowing.