Gelandy quartz has passed the GB 4806.6-2016 national standard for food safety testing and meets food-grade standards.Gelandy quartz sand raw materials have passed the GB 4806.7-2016 national standard for food safety.The resin raw materials used by Gelandy are SGS certified and comply with the GB 4806.7-2016 and GB 4806.6-2016 national standards for food safety.