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

China Nat' l Scientific & Materials Corp
A manufacturer of piezoelectric quartz, quartz products and single crystal optical products for use in the telecommunications and general time and frequency industries.
http://www.csimc-freqcontrol.com

Precision Devices, Inc.
Manufactures crystal products in custom and SMD packages including quartz crystals, crystal filters and crystal oscillators. Online line card, specifications and PDF catalogue and data sheets available for download.
http://www.pdixtal.com/

Nihon Dempa Kogyo Co., Ltd.
Manufacturer of quartz crystal products, crystal units, VCXO, TCXO, TC-VCXO, SAW devices, crystal filters, optical components and ultrasonic transducer.
http://www.ndk.com/

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

Electro Dynamics Crystal Corp (EDC)
Manufacturer of quartz crystal products.
http://www.electrodynamics.com

Shenzhen Crystal Technology Industrial Co., Ltd.
Manufacturer of quartz crystal, crystal oscillator, SMD crystal, ceramic resonator and saw filter. Includes product descriptions, and reliability test and quality control flow diagrams.
http://crystal.telecomnet.com.tw/

Beijing Crystal Electronics Co. Ltd.
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http://www.bjcec.com

Advanced Crystal Technology
A supplier of frequency control products offering standard and custom quartz crystals, crystal filters, oscillators and ceramic resonators.
http://www.advancedcrystaltechnology.com/index.html

Crystal Ascension
Great prices on quartz crystals, chakra tuned quartz singing bowls, original and custom artwork, hand-made drums and leather goods, music, and jewelry! Let crystals help you in your ascension process.
http://www.crystalascension.com