他们是有加抗黄的，他们的大货都是有达到抗黄的标准的，白色蕾丝抗黄的效果

They have added anti-yellow, they are all the goods meet the standards of the anti-yellow, white lace anti-yellowing effect of maintaining the normal time is six months, which is the current technology can do the longest time it, and this is the time in the ideal state, if it will be reduced to maintain a similar hot and humid environment in time, so the factory presumably relatively long time to lace anti-yellowing effect of weakening caused, in addition there may be because the storage environment caused by improper.

They are anti-yellow, their large goods are up to the anti-yellow standard, white lace anti-yellowing effect normal maintenance time is 6 months, this is the current technology can do the longest time, and this is the ideal state of time, if in a similar sultry humid environment to maintain the time will be reduced, So the factory speculated that it might be due to a weakened yellowing effect of the overtime lace, and it may also be due to the inappropriate storage environment.

They have anti yellow products. Their bulk products have reached the anti yellow standard. The normal maintenance time of the anti yellow effect of white lace is 6 months. This is the longest time that current technology can achieve, and this is the ideal time. If it is maintained in a similar hot and humid environment, the maintenance time will be reduced, so the factory speculates that it may be a time comparison In addition, it may be caused by improper storage environment.