As many as one in 10 IT products sold worldwide may be counterfeit, costing global technology companies as much as $100bn in lost revenue annually, according to a new report from KPMG, the auditing group.

Furthermore, counterfeiting typically results in inferior products reaching the market, damaging the brand equity of the companies whose products are being copied, said the report, to be released on Monday. KPMG said the $100bn figure was based on estimates from 15 leading global IT companies. The worldwide IT industry, which includes computers, networking gear, cellular phones and consumer electronics, is estimated to be worth $1,000bn in annual sales.

The report pointed to China as the most significant source of counterfeit IT goods. A high degree of foreign direct investment with advanced technology, inconsistent enforcement and low wages contributed to a favourable setting for counterfeiting, the report said.

“China is certainly the hotspot,” said Gary Matuszak, chairman of KPMG's electronics, software and services unit. “No other area comes close to what the market is in China. It is clearly the biggest counterfeiting market for IT.”

Officials at Hewlett-Packard, the computer and printer maker, as well as 3Com, the network equipment maker, said counterfeiters typically tried to copy their most successful products. However, officials at both companies declined to estimate the impact that counterfeit products had on their sales.

Industry sources said network switches, computer memory parts, hard disc drives and ink supplies were the most common components found on the black market. Such components can be manufactured by small operations, although legitimate suppliers in China have been caught manufacturing additional parts and selling them on the black market.

Mr Matuszak said counterfeiters also made finished products that appeared to be manufactured by leading IT companies.

The report noted that the price of an authentic product from a global original equipment manufacturer reflected the cost of research and development, brand development, manufacturing, marketing and sales. Counterfeiters, on the other hand, need only assume the cost of manufacturing and sales and can make a significant profit on black market goods that are priced below authentic products.

Counterfeit products are usually sold over the internet or through unauthorised retailers or are funnelled into legitimate distribution channels.

The report said legitimate manufacturers should be alert to any unexpected surge or drop in orders of raw materials or components, which could be a sign those materials or components were being diverted away from legitimate supply chain channels into the black market.

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