What is CISG

Convention on Contracts for the International Sale of Goods (CISG) was drafted by United Nations Commission on International Trade Law (UNCITRAL) in order to unify the international commercial law .CISG was improved from Uniform Law on the International Sale of Goods(ULIS) and Uniform Law on the Formation of Contracts for the International Sale of Goods which swere not successful as they were not  reconized by international trade society and were not Convention.
CISG does not consist the detail of all substance 's trading practice but its purpose is to provide the fundamental right and duty between buyer and seller and restitution which harmonize deference of all kind of legal systems. CISG has 101 article which  can  be separated into 4 part as following:

Part I - Sphere of Application and General Provisions (Articles 1-13)

Part II - Formation of the Contract (Articles 14–24)

Part III - Sale of Goods (Articles 25–88)

Part IV - Final Provisions (Articles 89-101)

The significant character of CISG is regulating base on the principal of freedom of contract.Hence the parties in contract may change the provision of CISG or agree not to use CISG within

each national public order.[1]

Here relative link

[1][1] M.J.Bonell,Introduction to the Convention, in Commentary on the international Sales Law-The 1980 Vienna Sales Covention,p 13(C.M. Binaca & M.J.Bonell eds. 1987

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