The standard of sampling during the test, the following is the requirement of the manual, which is 1/3 of the end of the back from the head and tail direction, due to the particularity of the material (natural leather),
The specification of sampling during testing, as required by the manual below, is to take 1/3 of the end of the back head and tail direction, due to the particularity of its material (natural leather),
The following are the requirements of the manual for the standardization of sampling during the test. It is to take 1 / 3 of the back from the head to the tail. Due to the particularity of the material (natural leather), the,<br>