(Yicai Global) March 1 -- China's commerce ministry will impose an anti-dumping duty on bisphenol-A imported from Thailand beginning on March 6.

PTT Phenol Co. will pay a rate of 9.7 percent, while other companies will need to fork up 31 percent, the Ministry of Commerce said online.

China made a preliminary ruling on Nov. 9, confirming that imports of bisphenol-A, an organic chemical used to make plastics and epoxy resins, were harming the domestic industry. The investigation began last March.