I have sellers that give products through reasonable procidures.
1. Seller sends IFCO (Irrevocable Full Corporate Offer)
2.   Buyer accepts and returns to seller endorsed.
3.   Buyers Bank sends Pre-BG advice  directly to sellers Bank,giving an irrevocable undertaking to issue Revolving and Irrevocable Bank Guarantee upon receipt of 2% performance bond and POP.
4. Seller sends POP/ 2% performance bond within 5 days of receipt of Pre-BG advice
5.   Seller issues NOR.
6.   Buyer conducts Q & Q
7.   Buyer? Bank  issues Bank Draft when ship longside.
8. Buyer takes delivery