[Science stickers] Tips for checking and accepting valves?

The purpose of valve acceptance?

      Through the acceptance, the quantity and appearance of the delivered valve can be checked and checked to prevent the appearance quality damage and lack of quantity during transportation, loading and unloading, etc., and the situation of the delivered valve can be actually grasped. If the order contract does not conform to the order, the quantity is short, the specification and model are wrong, the appearance has obvious quality problems, etc., it can promptly propose rejection and return to the supplier, and promptly contact the purchasing department to deal with the problem as soon as possible. In addition, the acceptance can also create conditions for the correct classification and storage of valve materials and the correct putting into use.

What is accepted?

     Valve material acceptance includes: packaging, marking, appearance quality, specifications, models, quantity, etc.

     The check and acceptance of valve materials should be done: the order/delivery list is consistent with the actual product, and the packaging and marking comply with the standard requirements. The appearance is of good quality and the quantity is accurate.

First, smell.

      Smell, the main reason for the smell of plastic products is the use of recycled materials and poor-quality additives. The pungent odor emitted by products with odors can harm the human respiratory system, so it is best not to use them.

 Second, look.

      Look at the appearance. If the product has rough appearance, molding defects, incorrect color, impurities, and poor printing quality, it is best not to use it. Products with unqualified appearance will affect the visual experience of consumers. At the same time, appearance is a reflection of internal quality. Products with unqualified appearance often have poor internal quality, which affects their use. Unqualified printing quality will affect the appearance, but will fade and contaminate other items.

Third, hands-on.

     Try it out. Some products are very bright in color in order to attract consumers' attention. Pigments of poor-quality dark products will squeeze out during use, and these pigments are generally industrial pigments. Consumers can check by themselves whether the selected dark color product is qualified: pour a little edible vinegar on the absorbent cotton ball and wipe it back and forth 100 times after touching the food surface. If the absorbent cotton ball is stained with color, it means that the product is unqualified.

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