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How many digits is the bar code design of hardware tools

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there are two forms of commodity bar code, namely standard code and shortened code
Standard Code: the bar code composed of 13 digits is called the standard code
the size of the standard code is 37.29mm × 26.26mm, the value range of amplification factor is 0.80-2.00, and the interval is 0.05
the 13 digit composition of the standard code can be divided into two situations:
First: the bar code starting with 690691 is composed of 7 digits (country code + manufacturer code), 5 digits of commodity code and 1 digit of verification code
example: 690mmmm ppppp C (vendor code commodity code verification code)
Second: the bar code starting with 692 is composed of 8 digits (country code + vendor code), 4 digits of commodity code and 1 digit of verification code
shortened code: the bar code composed of 8 digits is called shortened code. The shortened code can be declared only when the size of the standard code exceeds 25% of the total printing area
shortened code size: 26.73mm × 21.64mm, the value range of amplification factor is 0.80-2.00, and the interval is 0.05
the 8-digit shortening code consists of 7-digit commodity code and 1-digit verification code
example: 69 ××××× C (commodity code verification code)
prefix code only indicates the member of the country (or region) coding organization that assigns and manages the manufacturer identification code, not the origin of the product. When you see the beginning of the number string of the bar code is “690” – “699”, we know that the manufacturer of this commodity is the bar code in Chinese mainland. (attachment: prefix codes of bar codes of EAM members are as follows)

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