海运保险单英文

original B/L 1 copy.packing list 3 copies.commicial invoice 3 copies.marine insurance policy 1 copy.original certificate of inspection 1 copy.The Buyer should pay USD20000 to the Seller's account before August 30th, 2009. Balance payment (50% of the total value) should be paied to the said account within 30 days after receiving the goods.