A, B series of one to one with your purchase, buy only A paragraph or buy only B paragraph will can not use.

Dear Customer, please choose your favorite product serial number you buy!

Serial Number: A1	Serial Number: B1
Serial Number: A2	Serial Number: B2
Serial Number: A3	Serial Number: B3
Serial Number: A4	Serial Number: B4
Serial Number: A5	Serial Number: B5
Serial Number: A6	Serial Number: B6
Serial Number: A7	Serial Number: B7
Serial Number: A8	Serial Number: B8
Serial Number: A9	Serial Number: B9