Chinese Premier Wen Jiabao faces a tough task when he arrives in India next week to allay New Delhi's fears over China's rise as a global power, and to smooth tensions in an often-fractious relationship.

Wen plans to spend Dec 15-16 in New Delhi, after which he will travel to Pakistan, India's closest rival, for another two nights.

Despite a boom in bilateral commerce in the past decade and cooperation on global issues such as climate change, India and China remain suspicious of each other's growing international clout and influence.

"The relationship is a mixture of third-world solidarity and strategic rivalry. Those two elements are here to stay," said Jean Pierre Cabestan, an international relations professor at Hong Kong Baptist University.

"But India will need to balance China's growing power even more tomorrow than today."

The growing economic interdependence between China and India is likely to head Wen's agenda forthe trip.

Analysts say he could announce more Chinese investments in India or lower trade barriers to assuage the worries of Indian politicians, peeved that the Sino-Indian trade balance is heavily in China'sfavour.

India's deficit with China could reach $24-25 billion this year, said Srikanth Kondapalli, head of East Asian studies at Jahawarlal Nehru University.

The deficit rose to $16 billion in 2007-08, from $1 billion in 2001-02, according to Indian customs data.

Prime Minister Manmohan Singh is likely to press Wen for reassurances that China will open its market wider, especially in value-added sectors such as financial services and information technology.

China is India's biggest trading partner, with bilateral trade expected to pass $60 billion this year.

But even with greater market access, it is likely to be a long time before India can close the trade gap.

"I don't see the deficit narrowing rapidly," said Dibyesh Anand, an international relations professor at London's University of Westminster. "Even if tariffs are lowered

on manufactured products, India can't compete with China on manufactured products."

TRADE IMBALANCE

India has sought to diversify its trade basket, but raw materials and other low-end commodities such as iron ore still make up about 60 percent of its exports to China.

In contrast, manufactured goods — from trinkets to turbines—form the bulk of Chinese exports.

In an illustration of India's dependence on Chinese manufacturing, Shanghai Electric Group Co agreed in October to sell power equipment and related services worth $8.3 billion to India's Reliance Power.

Even if India and China are the world's two largest emerging economies, the development gap between them remains large, due in part to a decade's head start for Chinese economic reforms. "India's at a phase of capital expenditure that is 15 years behind China. That's just the way it is," said Chetan Ahya, a Morgan Stanley economist in Singapore.