First, look at the lock material
The lock material on the market is basically divided into stainless steel, copper and zinc alloy. High-strength stainless steel, strong corrosion resistance, no discoloration, is the best lock material; copper is more versatile, mechanical properties are superior, and the price is higher; the lock high-quality zinc alloy is strong and wear-resistant, corrosion-resistant, and easy to form. Mostly used for mid-range locks.
Second, look at the surface treatment of the lock
The surface treatment is roughly divided into electroplating, spraying and coloring. The locks form a dense protective film on the surface of the product through surface treatment, which acts as anti-corrosion and anti-rust, making the lock more beautiful and durable. Lock industry network reminder: dense protective film is also a measure of the quality of locks, good quality locks, mostly using electroplating treatment, the coating is fine and smooth, even and moderate, bright color, no bubbles, rust and oxidation signs.
Third, look at the lock implementation standards
Foreign countries have very strict standards for hardware locks, so the quality of imported products is relatively high. We can feel the quality of the locks. Experts remind: In general, heavy locks, the quality is relatively high; the lock body can not be pointed, the tip is easy to hurt, especially pay attention to the lock handle end, the lock tongue and the lock body four corners; lock spring Good locks are flexible to open, high in sensitivity and long in service life. There are also many styles of locks, so be sure to keep in mind the style of the interior doors.
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Trampoline is the same thing as football but with trampolines. The only difference is that field goals are made by holding the football and jumping over the post.
You can block the field goal by tagging the person and pushing away (DON'T WORRY THIS IS PERFECTLY SAFE).
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