On March 17, 2026, concerns over the supply of naphtha, a key petroleum product, have intensified, prompting multiple manufacturers to announce price increases for naphtha sales [1]. Naphtha is primarily obtained during the oil refining process and is widely used in industries such as plastics and synthetic fibers [1]. The supply anxiety stems from increased domestic and international demand, combined with production adjustments by oil-producing countries and instability in international affairs, which have led to a surge in crude oil prices and consequently higher naphtha procurement costs [1].
A manufacturer representative stated that if crude oil prices remain elevated, further price hikes may be unavoidable [1]. The rising naphtha prices are expected to ripple through downstream industries, particularly affecting the prices of plastic products and chemicals. Industry insiders highlight the challenge of how much of these increased costs can be passed on to consumers [1].
Chart analysis reveals that naphtha prices have risen sharply in recent months, breaking through key support levels. Analysts note strong short-term upward pressure, though adjustments may occur depending on the crude oil market and international supply conditions [1]. Current support for naphtha prices is around 80,000 yen per ton, with resistance at 85,000 yen per ton; surpassing this resistance could lead to further price increases [1].
Experts advise that if manufacturers continue raising prices, related product prices are likely to rise incrementally. Companies are recommended to diversify procurement sources and increase inventories as risk mitigation strategies [1]. While market sentiment remains somewhat bullish, caution is advised due to ongoing volatility in international affairs and crude oil prices [1].
CONCLUSION
Naphtha supply concerns and rising crude oil prices have led to widespread price hikes by manufacturers, with downstream industries facing cost pressures. Analysts and experts anticipate continued upward momentum but advise caution due to market volatility. Companies are urged to adopt risk management strategies as further price increases remain possible.