• Which is the better hardness of brass or cupronickel?

    Which is the better hardness of brass or cupronickel?

    Brass is an alloy composed of copper and zinc. If it is made of copper and zinc group du, it is called ordinary brass. If zhi is composed of two kinds of elements on dao, it is called special brass. Such as copper alloys composed of lead, tin, manganese, nickel, lead, iron, and silicon. Brass has st... read more

    Sep 29,2020 News
  • What is the difference between Golden Dot Atomic Padlock 33 series and 32 series?

    What is the difference between Golden Dot Atomic Padlock 33 series and 32 series?

    Of course it is the yuma bai lock. It is the top du brand of Chinese locks. There are also advertisements on TV %D%A yuma lock zhi lock cylinder, which intersects and locks the upper and lower bullet holes of traditional marble dao locks. The principle is changed to the method that the shrapnel is c... read more

    Sep 26,2020 News
  • Securing UPVC Door locks with Multipoint Door Lock Cylinders

    Securing UPVC Door locks with Multipoint Door Lock Cylinders

    The sight of a uPVC door on your home immediately acts as a potent visual deterrent. Burglars know that not only are these doors more secure than their wooden counterparts, they are also fitted with multipoint locks: a locking mechanism that secures from several points (from a basic 3 point, to the ... read more

    Sep 18,2020 News
  • Does the key contain lead, what composition, and what proportion?

    Does the key contain lead, what composition, and what proportion?

    An American dao medical research institution published an article warning that common keys contain lead, which can cause lead poisoning in children during normal dao contact. Generally speaking, 98% of brass keys are copper or other metals. Adding 2% lead can easily be cast into various shapes. SoMo... read more

    Sep 12,2020 News
  • One of the suitcase customs lock TSA007 is locked, how to crack the password?

    One of the suitcase customs lock TSA007 is locked, how to crack the password?

    The easiest way: Find a good place to light the bai line (or use a flashlight for du), and look at the iron piece under the zhi wheel for the password. You will find a small dao gap, turn all three gaps to the left, and then subtract three (five) from each number to the left, which is the password. ... read more

    Sep 03,2020 News
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