Wanzhao Chemical has developed a unique process to prepare high-quality sodium carboxymethyl cellulose. When it is applied to red wine with proper addition, it can increase the light transmittance of red wine and effectively inhibit the crystallization of potassium ions and hydrogen tartrate, thus improving the stability of wine. The experiments show that this type of CMC is better than YMP and MTA in terms of stability and clarity when applied to red wine.