Q:How does the substrate affect the price of PPGL?
A:Galvanized coil (AZ): The price of the substrate is affected by the weight of the aluminum-zinc alloy coating (such as 80g/m², 150g/m²), and the fluctuation of the aluminum-zinc alloy price (LME aluminum, LME zinc futures) is directly transmitted to the cost.
Galvanized coil (GI): The cost of the substrate depends on the zinc price (such as the Shanghai Futures Exchange zinc price). The higher the zinc coating weight (such as 275g/m²), the higher the price.
Thin-gauge substrates (such as 0.2mm) are difficult to produce and the price is 5%-10% higher than conventional thickness (0.5mm); high-strength steel substrates (such as HX340LAD+Z) are more expensive due to high smelting costs.
Q:Does coating type affect PPGL price?
A:Ordinary polyester (PE): low cost, suitable for building roofs, priced 200-500 yuan/ton lower than high-end coatings.
Silicon modified polyester (SMP): better weather resistance than PE, 10%-15% higher price.
Polyvinylidene fluoride (PVDF): high-end coatings (such as fluorocarbon paint), used for curtain walls and highly corrosive environments, priced 2-3 times that of PE.
Q:How does coating thickness affect PPGL price?
A:Single-sided coating: If the customer requires "front 15μm / back 7μm", the increase in total coating thickness will directly increase the amount of coating and cost.
Multi-layer coating: primer + topcoat + clear coat (such as three-coat three-bake process) is 15%-25% more expensive than the single-coat single-bake process.
Q:How does the production process affect PPGL prices?
A:1. Coating equipment and process ◦ High-speed coating lines (high production capacity) cost less than low-speed lines, but precision coatings (such as ultra-thin coatings with ±1μm error) require high-end equipment and are more expensive.
Customized colors (such as special Pantone colors) may increase the paint mixing cost by 50-100 yuan/ton. 2. Curing temperature and energy consumption ◦ High-temperature curing (such as PVDF requires more than 230℃) consumes more energy than low-temperature curing (about 200℃ for PE), and the electricity cost increases by about 30-50 yuan/ton.
Q:How does market supply and demand affect prices?
A:1. Downstream industry demand
Construction industry: accounts for 60%-70% of PPGL demand, and real estate construction rate and infrastructure investment directly affect prices.
Home appliance industry: The demand for high-end PPGL for refrigerator and air-conditioning panels is stable, and the price is resistant to price drops, which is 10%-15% higher than the construction grade.
Automotive industry: PPGL for car bodies requires high corrosion resistance, high certification threshold, and prices are 20%-30% higher than ordinary grades.
2. Seasonal fluctuations
Prices in the construction industry usually rise by 3%-5% during the peak season (March-May, September-November), and may be reduced for promotions during the off-season (winter).