Frozen fruits and vegetables are a convenient and fast food that is highly favored by consumers due to their ease of storage and cooking. However, in order to ensure the quality and taste of fruits and vegetables, the requirements for raw materials are also very strict.

1. The raw materials should be fresh. Only fresh fruits and vegetables can maintain their natural color, taste, and nutritional content. Therefore, when selecting raw materials, manufacturers need to ensure that fruits and vegetables are harvested at the appropriate maturity period and have not been contaminated or damaged in any way.

2. The raw materials need to undergo strict screening and cleaning. During the processing, any defective or contaminated fruits and vegetables need to be removed to ensure the quality and safety of the product. In addition, fruits and vegetables also need to be thoroughly cleaned during the cleaning process to remove surface dirt and pesticide residues.

3. The raw materials still need to be cut and processed. During the processing, fruits and vegetables need to be cut into appropriate sizes and shapes to ensure even heating and maintain their taste after quick freezing. In addition, some frozen fruit and vegetable ingredients also need to be steamed or blanched to maintain their color and taste.

4. The raw materials should comply with food safety standards. During the processing, manufacturers need to strictly comply with hygiene regulations to ensure the cleanliness and disinfection of raw materials and processing equipment. In addition, the raw materials need to comply with national and local food safety standards to ensure the quality and safety of fruits and vegetables.

Overall, frozen fruits and vegetables have strict requirements for raw materials, including freshness, cleanliness, cutting, and safety. Only raw materials that meet these requirements can produce high-quality fruits and vegetables that meet the needs and tastes of consumers. Therefore, manufacturers should be very cautious in selecting raw materials and processing to ensure the quality and safety of their products.