1 Strictly control the temperature and humidity to within the range of 20 to 25 centigrade and  60% to 70% humidity.

2 Forbidden to disorder the batch number.

3 Level the spandex wrapped yarn at the production site for no less than 24 hours before use, and ensure the yarn directly contact with the air.

4 Try to ensure the yarn used at one time is produced at similar time to avoid generating textile strip.

5 Protect the outer layer the the yarn from any damage that may cause broken in use.

6 Keep the spandex wrapped yarn guide smooth and clear,the angle of spandex wrapped yarn and orbit proper, avoiding tight tension may cause broken or strip.

7 Avoid violent collision during moving box for it may damage yarn layer and cause break off in use.