The higher the molecular weight of polyacrylamide (PAM), the higher the price. The reason is mainly related to the increase in production costs and higher product performance.

PAM is a polymer compound widely used in fields such as water treatment and oil extraction. The price of PAM is generally related to the following factors.

1. Increased production costs: High molecular weight PAM usually requires more raw materials and complex synthesis processes, resulting in increased production costs.

2. High molecular weight PAM has better performance: As the molecular weight increases, the solubility, water absorption, rheology and other properties of PAM will also be improved, making it more effective in various applications. High-performance PAM can treat water quality more effectively, improve soil structure, etc., so it has higher market demand and value.

3. Market supply and demand: For high molecular weight PAM, the market demand is relatively high due to its good performance and wide application. Relatively few manufacturers are able to produce high molecular weight PAM, resulting in relatively scarce supply, thus pushing up prices.