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Formosa Chemicals & Fibre Corporation operates major petrochemical production facilities at the Mailiao Industrial Complex in Yunlin County as part of the integrated Formosa Plastics Group No. 6 Naphtha Cracker Project.

Production Capacity

Aromatics Complex (Three Plants):

• No. 1 Aromatics Plant: 270,000 t/y paraxylene (PX), 135,000 t/y orthoxylene (OX), 250,000 t/y benzene​
• No. 2 Aromatics Plant: 580,000 t/y PX, 190,000 t/y OX, 470,000 t/y benzene​
• No. 3 Aromatics Plant (largest): 870,000 t/y PX, 150,000 t/y OX, 510,000 t/y benzene​
• Total: ~1.72 million t/y PX, ~475,000 t/y OX, ~1.23 million t/y benzene

Styrene Monomer (SM):

• 1.2-1.33 million tons/year capacity producing styrene from benzene and ethylene feedstock​

Phenol Plant:

• 400,000 tons/year phenol production with co-product acetone​

Polypropylene (PP):

• 510,000 tons/year using JPP gas-phase process technology​

Styrenic Resins:

• ABS resin: Combined Xingang/Mailiao capacity 410,000 t/y​
• Polystyrene (PS): Combined Xingang/Mailiao capacity 320,000 t/y​

Purified Terephthalic Acid (PTA):

• 550,000 tons/year No. 1 PTA plant at Mailiao​

Integration Model

FCFC Mailiao receives feedstock from Formosa Petrochemical's naphtha crackers (2.935 million t/y ethylene, 1.47 million t/y propylene capacity) located within the same complex. The aromatics plants produce benzene, toluene, and xylenes (BTX) from reformate and pygas streams, with PX exported to FCFC's Ningbo PTA plant exempt from China's 2% import tariff.​

Operations commenced in 1998 with Aromatics Plant 1 and the SM plant, expanding through subsequent phases.