Formosa Chemicals Announces Consolidated Revenue for June 2026

1. Date of Event: July 9, 2026 (R.O.C. Year 115) 2. Company Name: Formosa Chemicals and Fibers Corporation 3. Relationship to Company (Please enter '本公司' or 'Subsidiary'):本公司 (Parent Company) 4. Cross-shareholding Ratio: Not applicable 5. Reason for Announcement: Announcement of consolidated revenue for June 2026 at NT$27,666,322 million 6. Response Measures: None 7. Other Matters to be Disclosed (This material information qualifies under Article 7, Clause 9 of the Enforcement Rules of the Securities and Exchange Act as having significant impact on shareholders' equity or securities prices):

I. Comparison of June 2026 Consolidated Revenue with May 2026: (1) June 2026 consolidated revenue was NT$276.66322 billion, an increase of NT$2.8 billion (1.0%) compared to NT$273.869 billion in May 2026. Volume differences contributed +NT$3.03 billion, while price differences contributed -NT$2.75 billion.

(2) Sales Volume Analysis: 1. FCFC (Headquarters): +NT$3.786 billion ARO-3 resumed operations after scheduled maintenance, increasing PX sales and raffinate oil sales to Formosa Plastics Chemical by NT$3.63 billion. To mitigate phenol price decline risks, external sales increased by NT$240 million. Styrene monomer (SM) external sales rose NT$200 million due to reduced in-house usage. However, polypropylene (PP) sales dropped NT$280 million due to equipment maintenance and customer caution amid falling market prices.

2. FCFC Ningbo: -NT$110 million Raffinate oil sales decreased by NT$330 million due to production adjustments. Downstream phenol customers halted operations, reducing deliveries by NT$220 million. ABS sales declined NT$80 million due to low-price competition. However, PTA-6 resumed operations after maintenance, increasing production and sales by NT$540 million.

3. Other Subsidiaries: Famei Company: -NT$290 million, primarily due to reduced orders from branded long-fiber fabric customers amid weakened end-consumer demand caused by the U.S.-Iran conflict. Taiwan Acetic Acid: -NT$170 million, due to reduced production load in response to market demand.

(3) Pricing Situation: The U.S.-Iran peace agreement and reopening of the Strait of Hormuz reduced crude oil risk premiums and increased supply, leading to a sharp decline in oil prices and petrochemical/plastic raw material prices.

II. Comparison of June 2026 Consolidated Revenue with June 2025: (1) June 2026 consolidated revenue was NT$276.66322 billion, up NT$28.7 billion (11.6%) from NT$247.927 billion in June 2025. Volume differences contributed -NT$3.5 billion, while price differences contributed +NT$63.7 billion.

(2) Sales Volume Analysis: 1. FCFC (Headquarters): -NT$1.59 billion PP, ABS, and PS sales declined NT$1.04 billion due to falling prices and customer caution, compounded by equipment maintenance. Downstream demand for PTA, PIA, and OX weakened, reducing deliveries by NT$1.02 billion. However, improved PX margins enabled expanded sales, adding NT$430 million.

2. FCFC Ningbo: -NT$1.59 billion PS and ABS sales dropped NT$750 million due to market caution. Downstream customers reduced production for PTA, PIA, and phenol, decreasing deliveries by NT$630 million. Raffinate oil sales declined NT$180 million due to production adjustments.

3. Famei Company: Long-fiber fabric sales decreased by NT$270 million, mainly due to price-cutting competition from mainland China.

(3) Pricing Situation: The U.S.-Iran conflict drove up crude oil and petrochemical product prices earlier in the year. Although prices reversed and declined after the June peace agreement, average prices for major products remained above last year's levels.