Several key parameter settings for QR code assignment in the printing package industry
With the maturity of network technology, the application of QR codes in product packaging has become more and more extensive. In the actual application process, the QR code has several key parameter settings: 1. QR code size setting: QR code size specification. For example, cigarette pack printing strip packaging is commonly used: blank 18mm × 18mm, black code 15mm × 15mm, default margin 1.5mm (black code edge to blank edge distance). Box packaging is commonly used: white space 15mm × 15mm, black code 12mm × 12mm, default margin 1.5mm (black code edge to blank edge distance). 2. QR code direction setting There are 3 positioning patterns in the QR code. The QR code can be quickly read from any direction of 360 °. However, the direction of the QR code must match the printed standard. 3. QR code version setting Two-dimensional codes (referred to temporarily as QR codes here) have different versions (types) of 1 ~ 40, and each version has a unique symbol structure (symbols refer to the square black and white dots that constitute the QR code). "Symbol structure" refers to the number of symbols in a two-dimensional code. Starting from 21 symbols × 21 symbols, the vertical and horizontal directions are incremented by 4 symbols each, until the version is 177 symbols × 177 symbols. 4. QR code correction level setting The two-dimensional code has an "error correction function", even if part of the code is dirty or damaged, the data can be recovered. Data recovery is based on codewords (the units that make up internal data. In the case of QR codes, every 8 bits represent 1 codeword), and can correct up to about 30% of errors (depending on the degree of dirtiness and damage, it also exists Unrecoverable situation). You can choose from four error correction levels: "L", "M", "Q", and "H". Why sliding door storage cabinets are becoming more prevalent in offices? Economy Sliding Door Cupboards,Office Storage Cabinets with Sliding Doors,Tall Storage Cabinet with Sliding Doors LUOYANG SHIDIU IMPORT AND EXPORT CO., LTD , https://www.shidiucabinetes.com
Schematic diagram of QR code 
Schematic diagram of cigarette pack QR code 
Schematic diagram of the box QR code
Sliding doors are a growing trend in commercial projects.
Space savings is a major advantage of sliding door storage.
when comparing traditional swinging door cabinets with sliding type, you will see the vast difference.
Another advantage is the ease of operation.
Sliding door cabinets allow users to open or close the door with an arm or elbow in case they have their hands full.
You will find glass sliding door cupboards and steel sliding door cupboards here.
Slamming sliding doors could be a concern, however, now usually soft open devices installed in the track.
Or, shop roller shutter cabinet instead. Evaluating your space, sometimes swing and sliding doors combination is your favourite.
In home office storage, you will find more special types.