Product line management system and method thereof

A product line management system for testing products, each of the products comprising a unique identification number, the product line management system comprising:

• a data storage device to store a first table, the first table comprising a first column recording the unique identification numbers of the products, a second column recording test types, and a third column recording test results, each of the identification numbers corresponding to a plurality of the test types and a plurality of the test results, one of the test types corresponding to one of the test results;
• and
• a plurality of test devices, each of the test devices comprising:
• a number obtaining unit to obtain the individual identification number of one to-be-tested product;
• an input unit;
• a storage unit to store a second table comprising a first column recording the identification numbers and a second column recording the test types, each of the identification numbers corresponding to a plurality of the test types, the test types corresponding to one of the identification numbers being arranged in a test order;
• an interface unit to connect the data storage device to the test device;
• and
• a processor to obtain the test type through the input unit, determine whether a test type previous to the input current test type exists in the second table, and further generate first information to prompt the operator to return the to-be-tested product to the workstation of the existed previous test type when the test result corresponding to the existed previous test type searched in the first table through the interface unit does not exist or the test result corresponding to the previous test type is a first value.