The practice of supplying calcium citrate, or any dietary supplement or food ingredient, in sealed packages by Chinese factories, is a standard industry procedure aimed at ensuring product quality, safety, and compliance with regulations.

Sealed packaging helps protect the product from contaminants such as dust, microorganisms, or foreign particles that could affect its quality.Contaminants can compromise the safety and purity of the calcium citrate.

Sealed packaging helps maintain the freshness and shelf life of the product.It prevents exposure to air and moisture, which can lead to product degradation or spoilage over time.

Sealed packages help ensure that the product has not been tampered with or opened before reaching the end consumer.This adds a layer of security and ensures that consumers receive an intact and uncontaminated product.

In many countries, there are regulatory requirements for the packaging and labeling of dietary supplements and food ingredients.Sealed packaging often helps manufacturers comply with these regulations.

Sealed packages give consumers confidence in the product's safety and quality.When consumers see that the package is sealed, they are more likely to trust the product's authenticity.

Sealed packaging can provide accurate dosage control.For example, individual capsules or packets of calcium citrate can help consumers measure and consume the correct amount.

Sealed packages typically include essential product information, such as ingredient lists, usage instructions, expiration dates, and contact information for the manufacturer or distributor.This information is crucial for consumer safety and awareness.

It's important for consumers to choose calcium citrate products from reputable manufacturers and suppliers who follow quality control and packaging standards to ensure product integrity and safety.