Hello, We have own mining of Quartz and it products. All quality available with us. We are from India & Dealing with all part/port of India. As per contact condition we deal with client. Because no compromising with quality as so depend on that we dealing and finalizing rates. See Test certificates, Content which client requirement and as per sample make deal with US. We are genuine supplier with manufacture of Quarts. We have all Testing facility with enough quantity supply. All Licence we have to supply FOB or CIF from India. Thank you and give us positive reply.