This contract is made in two originals that should be held by each party. 此合同一式二份，由双方各持一正本。
What is left unmentioned in contract may be added there as an appendix.
The Contract is written in quadruplicate (two for original and copy respectively) which shall become valid on the date of signature.
This Contract is executed in two counterparts each in Chinese and English, each of which shall be deemed equally
authentic. This contract is in 2 copies effective since being signed/sealed by both parties.
This contract is made by and between the buyers and sellers， whereby the buyers agree to buy and the sellers agree to sell the under-mentioned. Commodities according to the terms and conditions stipulated below.
This contract is made in two originals that should be held by each party.