Computer monitors manufactured in China may contain raw materials such as metal semiconductors, phosphorous, lead and mercury. These raw materials may vary depending on the type of computer monitor you're exporting. There are a few main types of computer monitors presently offered to consumers:

  • Light Emitting Diode Monitors (LED) contain materials such as gallium arsenide.
  • Liquid Crystal Display Monitors ( LCD) contain polarized glass and are coated with fine crystals. Electric current is then passed through the crystals and glass to form images.
  • Cathode Ray Tube Monitors (CRT) contain large amounts of phosphorous and use vacuum tubes to display images.

Defective and cheap quality computer monitors have been a major concern for consumers when exporting from China. In 2007 New York Times wrote an article explaining that China was competing in a manufacturing battle with Taiwan to manufacture approximately one million computer monitors a month by 2008. When exporting from China, have your computer monitor inspection performed by a quality control specialist to ensure it meets ASTM specifications.
Modeling the Colorimetric Properties of a Cathode Ray Tube

The standard guide for modeling the colorimetric properties of a cathode ray tube (ASTM E1682 - 08) is used for the proper use in determining the operating characteristics of a CRT monitor. The operating characteristics explain the relationship between the digital information supplied by a computer.
Obtaining Colorimetric Data From a LCD computer monitor

The test involving obtaining colorimetric data from a LCD computer monitor is used to gather CIE tristimulus values and other color coordinates. This information will describe the multiple colors used in computer monitors by the use of spectroradiometric information.
A few other international standards that must be met due to health and safety concerns include:

  • ISO 9241 This standard is for the computer monitor ergonomics, such as computer monitor height and screen brightness.
  • EN60950 Applies to the safety of the electrical equipment used on computer monitors.
  • MPR2 Checks for electrostatic emissions from the coating on the computer monitor screen.


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