The investment trade and industry ministry (Miti) said this followed a probe launched in August 2023 on the imports of PET from China and Indonesia, after a petition filed by a local firm producing the same polymer.

It said the investigation confirmed that PET was being imported at a price lower than the selling price in China and Indonesia, negatively impacting Malaysia’s domestic industry.

Putrajaya subsequently imposed a 37.44% duty on all PET producers or exporters in Indonesia.

For Chinese firms, Far Eastern Industries (Shanghai) Ltd has been slapped with a 4.58% duty, followed by Jiangsu Hailun Petrochemical Co Ltd, Jiangsu Xingye Plastic Co Ltd and Jiangyin Xingtai New Material Co Ltd, which were each given a 2.29% rate.

Other PET producers or exporters in China have been given a heavier 11.47% duty.

The difference in anti-dumping duties for the Chinese firms was based on their respective dumping margins.

“The customs department will enforce the collection of the anti-dumping duties on the imports of the subject merchandise for a period of five years, effective May 7, 2025, to May 6, 2030.

“With the imposition of anti-dumping duties on the imports of subject merchandise from the alleged countries, it is expected that the issue of unfair trade practices will be addressed,” said Miti.