1、 Any plastic bottle must first meet the requirements of non-toxic and odor free. Due to the wide variety of main raw materials available, it is necessary to select the comprehensive properties of raw materials. Generally, high-density polyethylene and polypropylene bottles are used for tablets. If transparency is required, polyester bottles (PET bottles) can be used. If higher barrier performance, light blocking and opacity are required, brown PET bottles are used, Polypropylene bottles or polyester bottles are generally used as the main raw materials for liquid dosage forms. At present, pet or HPDE is mainly used as the packaging bottle of nutrition and health products and food in China, and PP is used as the bottle cap.

2、 Quality standard of plastic bottle products. The quality of products can be analyzed and judged from the product quality standards of the manufacturer.

3、 Tightness and water vapor permeability of bottle body and cap. Sealing and water vapor permeability are two important technical indicators of plastic bottles, which have a crucial impact on the stability of packaged products.

4、 Quality assurance system. The audit of suppliers has become an essential part of the purchase of plastic bottles. Through the audit, the comprehensive level of software and hardware facilities, technical equipment and quality of the manufacturer can be comprehensively and correctly evaluated.