business cards Manufacturers

The application of copper gaskets is extremely wide, and the pre-tightening load required by the gaskets is also different. So what are the advantages of using copper gaskets?

Compared with paper business cards, PVC business cards have higher water resistance, weather resistance and flexural resistance. Due to the better strength and rigidity of PVC business cards, they are also thinner and easier to carry.

The PET business card has good mechanical properties, and the impact strength is 3 to 5 times the other films, and the ability to resist.

Soaking or spraying appropriate acidic solvents on metal can cause it to corrode. If you first use acid-resistant substances to shield and protect the local metal and then soak it in acidic solvents, you can only partially remove the metal surface and get the result we designed in advance. Pattern, this is the general etching practice.

Classified by the nature of the business card: Identity card business card. This type of business card is mainly used in government agencies, scientific research institutes, schools, finance, insurance and other units. The content of the business card mainly identifies the name, position, unit name and necessary communication methods of the holder, and the main purpose is to transmit the person's personal information.

Test principle of water intrusion method: The water intrusion method is dedicated to the testing of hydrophobic filter elements.