What is the ruling on a commercial company financing its clients to purchase goods from China by one of the following two methods, and what are the Sharia controls for such transactions to be free from any suspicion of usury:

1. Agreeing with the client on a percentage of their profit or loss from the goods after selling them, with a maximum period of 4 months, while taking guarantee checks for the amount paid, and the second party purchasing the remaining goods after the agreed period?
2. The company purchasing the requested goods with specified specifications directly from the supplier, transferring the documents and bills of lading in its name, then selling them to the client in installments with a profit margin, and delivering the goods directly from the port to the client's warehouses without entering the company's warehouses, knowing that the company does not increase the amount on the client in case of delayed payment?

Question

What is the ruling on a commercial company financing its clients to purchase goods from China by one of the following two methods, and what are the Sharia controls for such transactions to be free from any suspicion of usury:

1.  Agreeing with the client on a percentage of their profit or loss from the goods after selling them, with a maximum period of 4 months, while taking guarantee checks for the amount paid, and the second party purchasing the remaining goods after the agreed period?
2.  The company purchasing the requested goods with specified specifications directly from the supplier, transferring the documents and bills of lading in its name, then selling them to the client in installments with a profit margin, and delivering the goods directly from the port to the client's warehouses without entering the company's warehouses, knowing that the company does not increase the amount on the client in case of delayed payment?