Article 20 (1)The acceptance time the offeror requiring in the telegram or the letter begins from the sending date of the telegram or the letter or the date printed on the envelop if no date noted on the letter. If it is send by telephone, telex or other means of instantaneous communication,it begins from the moment the offerer received. (2)The official holiday or the non-business days should be counted in the acceptance. But if the acceptance notice failed to be sent on the last day of the acceptance period that is the official holiday or non-business day, the acceptance period should be extended to the next workday. Article 21 （1）The delay acceptance is still effective if the offeree is informed within the acceptance period with the oral or written form. （2）The delay acceptance is also effective if it shows that the letter or other written paper are sent under the condition that they are normally deliveied and can reach the offeree within the period, unless the offeror informs the offeree the offer is ineffective in the way of oral or written inform the moment beyond the acceptance period. Article 22 An acceptance can be withdraw if the notice was sent before the effective time of the acceptance or at the same time it reaches the offeree. Article 23 An contact should be drawn up the moment the offer becomes effective in accordance with this convention. Article 24 For the purpose of this part of the Convention, the quotation, acceptance notice or other things that indicates having been sent to the offeree should have informed the offeree by oral or have sent by other ways to himself or his business address or mailing address or his usual habitual address without business address or mailing address.

PART III-Sale of Goods Chapter I-General Provisions Article25 If one party breaks the contract and causes losses to the other party and deprives what the other party ought to gains according to the contract, the act can be called as fundamental breach of the contact. Unless the party which breaks the contract can’t foresee and the same reasonable of the same kind can’t foresee the act at the same circumstance, his act wouldn’t be fundamental breach of the contact. Article26 Proclaim of the ineffectiveness of the contract will be effective only after the other party having been informed. Article27 Unless it is obviously expressed in the part of this Convention, the party still owns the right accordance with the notice, the requirement or other notices he send in an appropriate way, even though it is failed to reach the other party punctuality due to the overdue delivery. Article28 In accordance with the Convention, the court was not obliged to decide whether one party should to fulfill duties or not when one party requires the other party to. Unless the court willing to judge, according to the court law, for other similar sales contracts out of this Convention. Article29 （1）The contract can be changed or terminated as long as both parties agrees. （2）Any change or termination of the written contract should only be declaimed with written form unless the act of the party is well trusted by the other party. Chapter II-Obligations of the Seller Article30 According to the contract and the Convention, the seller should hand over the goods, all the relating documents and transfer the prosperity of the goods to the buyer. Section I-Delivery of the goods and handing over of documents

Article31 If the seller isn’t obliged to hand over the goods at the given place, the seller should also bears the following obligation: a)If the transportation of goods are mentioned in the sales contract, the seller is obliged to transfer the goods to the first carrier for transmission to the buyer. b) If the goods relating in the contract are specified goods or the unidentified goods to be drawn from a specific stock or to be manufactured or produced and both parties have been informed of the specific place of the goods or the location that the goods will be made or produced while drawing up the contract , being out of rule A, the seller shall transfer the property to the buyer at the informed place. c) In other circumstances, the seller should delivery the goods to the buyer at the place where the sales-contract were signed. Article32 (1)If the seller delivery to the carrier, according to the contract or the Convention but without clearly identified the relating contract on the goods, the shipment documents or by other ways, the seller has to send the buyer the consignment of all the goods. (2)If the seller is obliged to arrange the shipment, he has to draw up the necessary contract, containing delivering the goods to the appointed place with the appropriate transport tools under the normal transportation condition. (3)If the seller is not obliged to arrange the shipment, he has to provide all the required materials to the buyer to effect such insurance. Article33 The date for the seller to transfer goods should be accordance with the following rules: a)The goods should be delivered on the date stipulated in the contract or the date can be defined from the contract. b)Within the delivery period stipulated in the contract or the period can be defined from the contract, the seller can transfer goods to the buyer at any time, except the