Plastic seal with PP plastic, PE plastic or nylon injection molding, the seal is clamped steel, the product at minus 45 degrees, 50 degrees constant on the type, the surface stamping or laser marking, serial number, bar code, the lock for the 2 * 5 flat bar, when the seal is tightened, the color can be made into red, blue, green, yellow and white. It can also be made into other colors according to user’s requirements. So, how do we identify the quality of plastic seals is good or bad?
First, the surface, the general surface treatment Electroplating, spraying and coloring three, these surface treatments can form a protective film on the product, play a preservative and rust-proof role, while making the product more beautiful and durable. Good quality locks, the general use of electroplating, coating moderate, very uniform, bright colors, no bubbles, rust and oxidation signs.
Second, the material, the plastic seal material on the market is basically divided into stainless steel, copper, zinc alloy, iron and aluminum. The strength of stainless steel is good, corrosion resistance, the same color, is the best lock material; copper is more general, superior mechanical properties, the price is more expensive than; high-quality zinc alloy strong wear resistance, corrosion resistance is very strong, easy Molding, generally used to create mid-range lock.
Third, weight, and sound, to weight, feel than listen to the sound. Cut corners of the product, made of hollow materials and inferior materials, such materials up very light, the use of the hand is also very poor, the sound is boring; good locks on the contrary.