Precision Glass Products Co.
Precision Glass Products Company offers a complete capability of machining glass, quartz, and ceramic components
http://www.pgpcompany.com/

Young Shin Quartz
Quartz glass for semiconductor and optical fiber business.
http://www.ysq.co.kr/

Technical Glass Products, Inc.
Fabricators and suppliers of fused quartz and borosilicate glass products. Custom fabrication and glassblowing for industry and research. Glass tubing and rod.
http://www.technicalglass.com/

Glasatelier Saillart
All laboratory supplies for your lab. Search our online shop or ask for a free copy or our catalogue. We have a glassblowing shop for custom fabrication of quartz and borosilicate glassware.
http://www.glasatelier-saillart.be/English/english.html

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

Okandan Glass
Okandan Cam San. Ve Tic. A.S.
http://www.okandanglass.com/

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/

Glass for technical applications
Quartz and borosilicate glass products for chemistry, medical technology, laser technology, semiconductor technology, vehicle technology, laboratory technology, biotechnology.
http://www.quarzglas-heinrich.de

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