Xinyi Kaida Silica Co., Ltd
Chinese manufacturer of high purity silica sands, crystal powder, and fused silica.
http://www.kaidasilica.com/xykaida/

United Silica Inc
USP has offered quartzware and quartz fabrication for all types of quartz tubes and carriers for over 15 years. Other products include but are not limited to: wafers, discs, and liners
http://www.unitedsilica.com/

Kumkang Quartz Co., Ltd
Manufacturer of quartz ware - tubes, boats and other quartz wares for semiconductor processing.
http://www.kkquartz.co.kr/

How Crystal Watch Works
Quartz watches actually use quartz crystals to keep time. How can they be so accurate? Find out why quartz makes such a great time keeper.
http://www.howstuffworks.com/quartz-watch.htm

GianTek Quartz Material (Shanghai) Co.
Chinese manufacturer of quartz tube, rod, plates/discs and other custom fused quartz products for a wide range of industrial and laboratory applications.
http://www.gian-tek.com/

Chintele Quartz Technology Co Ltd
A Chinese manufacturer of piezoelectric quartz, quartz products and single crystal optical products for use in the telecommunications and general time and frequency industries.
http://www.chintele.com

OMIG S.A.
Manufacturer of quartz filters and quartz crystals for TCXOs, VCXOs, and OCXOs, and vacuum depositing process control quartz crystals. Site in English and Polish, and include product specification ranges and PDF part catalogs.
http://www.omig.com.pl/

Ruska Instrument
GE Sensing is an industry leader in design & manufacture of sensing instruments & devices that measure temperature, pressure, liquid level, humidity, gas concentration & flow for customer's critical applications. Products include Flow Meters, hygrometers, pressure sensors, calibrators, moisture meters & other measuring instruments.
http://www.ruska.com/

Zhaoyuan Huiyuan Silica Gel Co., Ltd.
Narrow pore white silica gel,Type B silica gel,Blue silica gel,Silica gel cat litter(silica sand),Orange silica gel(non-cobalt silica gel indicator),Silica gel for packages,Silica gel for dehydration of fresh flower,Silica gel for dehydration of fresh flower
http://www.silicagel-hy.com/

GeeJay Chemicals
GeeJay Chemicals, UK supplier of silica gel, silica gel sachets and molecular sieves. Desiccants adsorb water vapour that causes moisture damage.
http://www.geejaychemicals.co.uk/