BIDDER’S LETTER OF AUTHORIZATION BEIJING POLY 2021 SPRING AUCTION Poly International Auction Co., Ltd. is now applied to and entrusted, to designate a special person to carry out the competitive bidding for the Lots num- bered below according to the entrusted price listed below relying on this Letter of Authorization, and agree to the following terms: I.In the event of a successful bid, a slump-sum payment of the Hammer Price plus an additional 15% of the Hammer Price as the commission and all other expenses shall be made by the entrusting party to Poly International Auction Co., Ltd. within 7 days following the Sale Date, after which, the en- trusting party may take possession of the Lot (and shall pay for such costs such as packaging charges, cartage, transportation insurance premium and export appraisal fees). II.Then entrusting party knows and accepts that Poly International Auction Co., Ltd. assumes no liability for the authenticity and/or quality of any Lot;　 III.The “Disclaimer of Authorized Bidding” contained in the Auction Rules of Poly International Auction Co., Ltd. is an incontestable clause. The en- trusting party waives investigation of responsibilities of Poly International Auction Co., Ltd. and its employees bear for any unsuccessful bids, bidding negligence, or failure to carry out the competitive bidding; IV.The entrusting party must issue this Letter of Authorization on Entrusted Bidding to Poly International Auction Co., Ltd. at latest twenty-four hours pri- or to the Auction Date with the payment of an amount of guarantee money equivalent to 30% of the entrusted price listed. In order to ensure a smooth and successful bid, the entrusting party shall contact Poly International Auction Co., Ltd. by the Auction Date for the method of payment. If the aforesaid guarantee money has not been received by Poly International Auction Co., Ltd. twenty-four hours prior to the Auction Date, this Company is entitled to determine whether this entrustment will be accepted; V.The entrusting party acknowledges that he/she has carefully read the Auction Rules of Poly International Auction Co., Ltd. as printed in this cata- logue, and agrees to abide by all such clauses as contained therein. VI.The entrusting party promises to undertake the legal liability for the instant communication mode and tools filled in this Letter of Authorization on En- trusted Bidding, the bidding information conveyed during the competitive bidding, as well as the results arising therefrom. The entrusted party will bid on behalf of the entrusting party at the lowest possible price on the principle of protecting the client’s interests and the transaction price shall not be higher than the entrusted price listed. Lot No. Lot Name Bid Price (RMB Yuan) Please tick □ for entrustment by telephone Auction Date: (MM) (DD), (YY) Please Note: *This form can be copied Full Name of the Bidder: All such items as the Lot No., Name and Bid Price in this Form must be filled in; otherwise it ID Card/Passport No: shall be invalid. If two (including two) or more entrusting parties successfully bid for the same Lot with the same entrusted price and the Lot is sold out at this price finally, the Lot will be Deposit Bank, Account and Credit Card Info. awarded to the entrusting party who submits the Letter of Authorization on Entrusted Bidding earlier. In the event of entrustment of the competitive bidding through telephone, the entrust- Address: ing party shall pay the guarantee money based on the standard or have a reputable client to provide the joint and several guarantee; otherwise, this entrustment is invalid. Tel: Post Code: THE PROCEDURE FOR FOREIGN CLIENTS TO HANDLE THE Fax: COMPETITIVE BIDDING OR ENTRUSTED AUCTION: Signature of the Bidder: Date: I. Providing your bank account information. II. Providing your credit card information and registered bank telephone number. III. One of our prestigious clients can sign guarantee statement for you. Please Remit the Deposit to Our Bank A/C: USD ACCOUNT Account name: Kangoo Overseas Ltd. HKD/EUR ACCOUNT Account Address: 2501, Admiralty Centre,Tower1,18 Harcourt Road, HK Account Name: Kangoo Overseas Ltd Bank: Wing Lung Bank Ltd Account Address: 2501, Admiralty Centre, Tower 1, 18 Bank Address: 45 Des Voeux Road, Central, Hong Kong Harcourt Road, HK Bank code: 020 Bank: Citic Bank International Limited Swift code ：WUBAHKHH Bank Address: 232 Des Voeux Road Central, HongKong Account number: 020-601-806-8107-9 Swift Code: KWHKHKHH Bank Code: 018 The Chinese version of this Letter of Authorization shall be the standard version, and the Account Number: 694-1-47423800 English version is only for reference. In case of any discrepancy between the Chinese version and English version, the Chinese version shall prevail.

拍卖品 委托竞投授权书 出价 序号 (人民币元) 拍卖品 名称 拍卖会时间：2021年 月 日 此表复印有效 委托人姓名： 请注意： 身份证 / 护照号码： 开户银行及账号 、信用卡信息 填写此表时，须填写所有项目，包括拍卖品序号，名 称，出价等，否则无效。如果有两个以上(包括两人)出 地址： 价相同，先委托者先购得拍卖品。如果委托人以电话 方式委托本公司竞投，请用信件或传真确认。 电话： 邮编： 委托人签字： 传真： 海外人士办理竞投牌或委托拍卖手续： 日期： 一、提供银行帐户。 二、提供信用卡号及注册银行电话。 三、由本公司信誉客户填写担保书。

ABSENTEE BIDS FORM Lot No. Lot Description Price Bid (RMB) (in numerical order) (Lot Name) (excluding buyer’s premium) *This form can be copied - PLEASE PRINT CLEARLY IN BLOCK LETTER Auction Date： 2021. Month _____ Day _______ IMPORTANCE First Name：__________Last Name： ________ This form must be filled in completely. If identical written bids are received for the I.D. / Passport No. _______________________ same Lot, Ploy will give precedence to the first written bid received. Absentee bid Bank A/C, or Credit Card Info： when placed by telephone are only accepted at the caller’s risk and should be _____________________________________ confirmed by letter or fax. A d d r e s s：_____________________________ * Take the form in Chinese version as the standard in case of any ambiguity in ___________________________________ the English translation. ________________Post Code：____________ Tel： ______________ Fax：______________ THE PROCEDURE FOR FOREIGN CLIENTS TO REGISTER PADDLES Signature： _____________Date： __________ OR ABSENTEE BIDDINGS IS AS FOLLOWING 1. Providing your bank account information. 2. Providing your credit card information and registered bank telephone number. 3. One of our prestigious clients can sign guarantee statement for you. Please contact our foreign customer service line for more information (86-10) 64083188.

北京保利國際拍賣有限公司 中国拍卖行业概念股 保 利 文 化 (3636·HK)