I think you must invite a 3rd part inspection company to inspect the cargos and company audit before you start your business with your supplier.
Normally, before you do business with a company , you should let somebody to do company audit and then you can see the detail information of this company, and let your supplier send you a sample before you order and deposit, then do final inspection before shipment, and you can decide if ship it or not , then you can control each step during your business to avoid risk. and the cost of inspection is very cheap compare with your loose.
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