Give the major items of the contract proper.

Give the major items of the contract proper.

The contract proper includes:
A）the full namne and address of the buyer and the seller
B）the commodities involted including quantity. quality, specifications, packing. ete;
C）all the terms and conditions agreed upon such as the price, total amount, terms of payment, transportation,insurance,etc;
D）indication ot the number of original copies of the contract the languages used, the term of validity and possible extension of the contract.