Dongguan is considering giving incentives for polluting factories to move to industrial parks with proper treatment facilities. A senior official from the Pearl River Delta city, who did not want to be identified, said the idea was still at a preliminary stage and would be announced once it was decided. Some Dongguan-based Hong Kong manufacturers engaging in production like dyeing or electroplating have complained they are being forced to close or relocate their factories amid tightening environment and safety requirements on the mainland. They said moving to a new industrial park as suggested by the mainland authorities would mean extra costs for them. Dongguan is one of the largest manufacturing bases in Guangdong and is a popular investment place for Hong Kong operators. Many new factories have already had to satisfy stricter anti-pollution measures when they moved into the city, incurring higher production costs. Vincent Fan Man-ching - senior finance director of Amprex Technology, which runs two battery component factories in Dongguan - said tightening environmental standards had increased their capital and operation costs. An installation, which recycles used solvents, cost about HK$7.8 million. 'The environmental standard is getting tougher and tougher, and we have to find ways to cope with it,' he said, adding that any financial help would be welcome. Despite the tougher standards, Mr Fan said it had driven them to develop a tailor-made pollution treatment facility, which had been patented on the mainland. Beer brewer Kingway spent 21 million yuan on pollution treatment when its plant in Dongguan was completed last year. But its director, Gao Yongli, said the expenditure would also bring better utilisation of raw materials for reuse and help save some costs. Liu Guojun, deputy director general of the Environmental Protection Bureau of Dongguan, said the bureau would continue its policy to upgrade the city's industrial bases. 'We want to attract industries that can meet higher standards and consume less energy,' he said during a media visit to Dongguan, organised by Guangdong's Hong Kong-Macau Affairs Office and the Environmental Protection Bureau.