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BEIJING, October 12 (TMTPOST) – After the U.S government tightened semiconductor exports control, share prices of Chinse semiconductor companies have dropped. 

Taiwan Semiconductor Manufacturing Co. dived to close at 401.5 NTD (about $126) per share on Tuesday, down 8.33 percent. Its market value fell by about 950 billion NTD (about $ 30.11 billion).

The Bureau of Industry and Security (BIS) under the U.S. Department of Commerce issued several export control measures against China Last Friday. Share prices of several A-share semiconductor companies dived for two consecutive days. 

Specifically, semiconductor manufacturing equipment company stocks experienced a great fall. NAURA Technology Group Co., Ltd., issued a performance-growing forecast in the midday but still failed to rebound from its limit down, which lasted for two consecutive trading days.

According to several semiconductor equipment industry sources, these tightened U.S. export controls would significantly impact domestic companies.

Domestic wafer foundries may have no new equipment to use. An engineer working for AMAT (American Applied Materials) said that he had stayed in a domestic wafer foundry office but received a notice from the company in July this year to make preparations for working abroad.

It is worth noting that, in addition to China's semiconductor manufacturing industry, the taping of chips for high-performance computing and advanced process general-purpose processors are also included in the list of controls. As a result, Haiguang Information Technology Co., Ltd. fell on Monday and continued to fall by 19.25% on Tuesday, a two-day drop of 35.06% and a market value shrinkage of 47 billion yuan (about $ 6.55 billion) in two trading days.

Analysis by the law firm King & Wood Mallesons pointed out that these new restrictions mean that traditional domestic chip design manufacturers will be strictly limited to seeking overseas wafer foundries to tape relevant high-performance chips in the existing semiconductor supply chain, even if the relevant chips do not appear on the control list. As long as its technical indicators meet the corresponding standards, they will also be affected.

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