Not bad. Take China Commodity Exchange as an example, it has formulated the quality standard for rapeseed oil delivery. According to this standard, the delivery varieties of rapeseed oil include first-class rapeseed oil and second-class rapeseed oil. The first-class rapeseed oil must meet strict quality standards in appearance, color, smell, taste and impurities, while the second-class rapeseed oil is slightly different. In addition, the delivered rapeseed oil must comply with relevant national laws and regulations. For example, GB 1536-2004 Quality Standard for Edible Oils, except ZCE, other futures exchanges may have different delivery quality standards for rapeseed oil. Investors need to carefully understand the relevant laws and standards before trading to avoid disputes and disputes caused by quality problems. The standard of futures delivery quality is also one of the important indicators to measure the stability and fairness of futures market.