You can pay by T/T, Western Union or Alibaba Trade Assurance.

Surely, it depends on your order quantity.

Free samples are available, but freight charges will be at your account. The charges will be returned to you or deducted from your order in the future.

You can get free samples for some products, you only need to pay the shipping cost or arrange a courier to take the samples. You can send us your product specifications and requests, and we will manufacture the products according to your demands.

First of all, our quality control will reduce quality problems to near zero. If there is a real quality issue caused by us, we will send you free goods for replacement or refund your loss.

The product has a shelf life of 2 years. It should be kept in a cool, dry, and dark location in a tightly sealed container or cylinder to maintain its quality.