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  1. The package include the good ,COA ,packing list and so on. You can query the original test report through the P.O. number and the LOT number in the COA.
  2. We have had professional technicians here to explain the relevant technical problems for you by Email in 24hours or Tel in emergency.
  3. We accept unconditional return for the quality complain, for the return of the customer's own reasons, we will charge 25% of the P.O. Value.
  4. To the customized synthetic products, we will note each step and each key node will feedback to the customer by email, in case that customers track the product schedule.