1. For Regular RMA: 

Within the warranty period, the defect rate within 10% in one batch goods.
We will conduct RMA according to RMA policy.

2. For Big quantity RMA: 

During the period of trial selling of our product, over 10% defect rate is founded. 

To avoid worse results, we require buyer to stop selling the products and return all of the
goods back within 30days after receiving the products.
For claim over 30days after receiving the products,
as it is hard to define the defect rate due to the deferring storage,
we will only responsible RMA claim according to Regular RMA policy.

3. Normal quantity within allowable defective rate: 
Due to transportation and improper use by end user,
it is possible to have some percentage of defective. It is reasonable.
We have allowable defective rate (see policy B above) which we are sorry not for replacement.