Raw Material Costs: 1312A.TW, which is Formosa Plastics, relies heavily on raw materials like ethylene. Price fluctuations in these materials significantly affect production costs and profitability.

Global Economic Conditions: Overall economic health impacts demand for plastic products. A strong economy typically leads to increased demand, while a recession can dampen it.

Industry Supply and Demand: Oversupply in the plastics market can put downward pressure on prices, while strong demand and limited supply can lead to price increases.

Government Regulations: Environmental regulations related to plastics production and usage can impact costs and potentially restrict certain product lines.

Company Performance: Formosa Plastics' financial performance, including revenue, profit margins, and production efficiency, directly influences investor confidence and stock price.

Exchange Rates: Fluctuations in the exchange rate between the New Taiwan Dollar (TWD) and other currencies, particularly the US dollar, affect import costs and export competitiveness.

Investor Sentiment: Overall market sentiment and investor appetite for risk can influence stock prices, regardless of fundamental factors.

Competitor Actions: Actions by competitors, such as capacity expansions or price cuts, can impact Formosa Plastics' market share and profitability.

Technological Advancements: New technologies in plastics production or alternative materials can disrupt the industry and affect demand for Formosa Plastics' products.

Dividend Policy: Formosa Plastics' dividend payout ratio can influence investor demand for its stock, especially among income-seeking investors.