US lobbies represented by the US Chamber of Commerce have recently asked the US government for help over China's new cyber security regulations, saying they may hurt US firms' overseas business opportunities.

The Chinese government has not officially published the new rules.

The US information technology firms said they will be forced to hand over source codes and adopt Chinese encryption algorithms when doing business with Chinese banks.

Observers said the US business lobbies meant to press Beijing to change its decision.

China is not the first country to enforce cyber security monitoring measures. Actually it is a common practice for governments with the monitoring capabilities. The US is one of the forerunners in this field, with a sophisticated system to guard its security.

China's telecom giants Huawei and Zhongxing, though agreeing to comply with the US rules, have still long been rejected from entering its market over security concerns.

Equipment provided by US company Cisco Systems Inc, for example, makes up about 73 percent of China's core telecom networks. Cisco's products are also seen in most of China's banks, customs, police, education and government departments, according to Qin An, a cyber security expert.

Even if the US firms' complaints about China's new rules are realized, the Chinese government only requires the banks to ensure security when using US products, not to replace them.

It is understandable that a few core government departments use China's own products instead. The Snowden incident has let the world know how far US intelligence reaches, and even the German chancellor was tapped by the US. Germany has since announced that it will use its own systems.

Chinese society cherishes the trade ties with the US, which serve as a balance in Sino-US relations. It also meets China's interests in preserving the business cooperation with the US. US firms will generally see growing space in developing their businesses in China.

The US companies need to get used to China's concerns over national security. They need to respect our laws and regulations, just as our companies have to respect the US rules even if we do not totally understand them. Some US IT giants have the opportunities to enter the Chinese market, but they choose to stay out.

Most of the major US Internet companies have been doing business in China. They are clear about China's urgency in addressing security issues. We hope they can cooperate with the Chinese authorities and continue their businesses in China.