Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
Classification of zippers by structure ①Closed zipper. The rear yard is fixed and can only be pulled away from the front yard. When the zipper is fully opened, the two chain straps cannot be separated by the rear code. Suitable for ordinary bags. ②Open…
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