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, will be reduced if it is maintained at a similar time in the hot and humid environment, so the yellow lace factory speculated may be due to the relatively long time lace anti-yellowing effect caused by weakening, there is also probably because of improper storage environment caused.

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 the yellowing of the lace may be due to the longer-time lace's reduced anti-yellowing effect, but also may also be due to the storage environment is not suitable.

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, which is the longest time that the current technology can achieve. Moreover, this is the ideal time. If it is in a similar hot and humid environment, the maintenance time will be reduced, so the factory speculates that the yellow of lace may be Because the anti yellowing effect of lace is weakened for a long time, it may also be caused by improper storage environment.