Pingdingshan u-lock, u-type lock production, odd rain locks firm (certified merchants)

 Before we introduce a lot of the development of domestic locks, today we explore foreign cultures locks. In the early 18th century by British D · Porter invention cam lock in turn, its key number by more than 20 kinds of three spring locks to more than 80 kinds of development; the mid-19th century, European manufacturers in turn cam locks and three piece spring converted into a slide lock u-turn lock up on the basis of the lock, the key number up to 1600 species. 1848 supply u-lock, Americans L · Yale invention uses a cylindrical pin tumbler lock bolt, the lock has become the world's most popular locks. Today, the structure of modern tumbler lock another new development, there two-way, three-way, four-way marble structure, and a flat, two-sided, multi-faceted, double-sided, multi-row multi-faceted structure and combination of marbles marble structure, thus greatly improving the lock security performance, so lock the original numbering some 2500 kinds through "to", "face" to reach one million kinds of changes. More content from Jiaozuo City Liberated cow Kawamura odd behavior you organize rain lock manufacturers reported the company to provide you with the most quality locks and the most sincere service, welcome to order and purchase of new and old customers. Today that point the way, since we are a professional to do the electric lock, then buy electric cars should pay attention to what? When the purchase of electric vehicles, from the tension on the card to determine whether local u-lock production, the second car in the election, to elect factory time within one month of the car, and the third, requiring distribution staff to open the battery case, look at the battery date of manufacture, the factory day shorter the better, not higher than the maximum one month, if the dealer refused to clarify where the battery inside either too long, or be replaced, then there is too small to be selected at a local car aftermarket service environment, met some brand vehicles, according to their need, select models of the car the difference, do not trust, said the number of trafficked persons mileage, as usual will not reach the mileage they say, but also to thoroughly understand three packs of batteries environment, as usual is the package a year, within six months of which landed battery mileage over 40% u-type lock price changes draw level with the original brand battery capacity, higher than six months a year is not enough, for the maintenance of the battery, When is the elimination of the law given, must change with the new brand with the specifications of the battery within a year, this is definitely going to ask you to understand in the car. Jiaozuo City Liberated cow Kawamura odd rain locks motorcycle locks, electric locks, bicycle locks, U-lock, wire lock, glass door locks and other professional production and processing company, has a complete and scientific quality management system. Integrity, strength and quality of the liberated areas of Jiaozuo City Kawamura odd cow rain locks firm recognized by the industry. Welcome friends to visit, guidance and business negotiation. If you need to call the picture phone! Pingdingshan u-lock, u-type lock production, odd rain locks firm (certified merchants) are provided by the liberated areas of Jiaozuo City Kawamura odd cow rain locks businesses. Jiaozuo City Liberated cow Kawamura odd rain Locks firm (qingyusuoju.1688.com) is a professional engaged in "wholesale locks" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Liu rain.