The Chinese commerce ministry said on Tuesday it will cut down export of the minerals by more than 11 per cent in the first half of next year.
Beijing says its curbs are for environmental reasons and to guarantee supplies to domestic industrial consumers.
In a short statement on its website, the commerce ministry said it had added more producer companies to the quota list, but had cut volumes allocated to trading companies.
The new numbers say China is allocating 13,105 tonnes of rare earths among 31 companies, down from 14,790 tonnes allocated among 22 companies in the first batch of quotas this year.
China, which produces about 97 per cent of the world's supply of rare earth elements, slashed its quota by 40 per cent in 2010.
China to Cut Rare Earth Exports
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