How can the last digit of the new stock lottery be different?

According to the relevant regulations on the issuance of new shares, when the effective subscription amount is greater than the online circulation amount, the host computer of the trading system of Shanghai Stock Exchange or Shenzhen Stock Exchange will automatically determine a subscription number according to the effective subscription amount per 1000 shares or 500 shares, and allocate the effective subscription numbers uniformly and continuously, and at the same time obtain the winning rate of stock issuance. The underwriter will organize a lucky draw according to this winning rate the next day. According to the relevant regulations on the issuance of new shares, the drawing date is T+2; The result of the lottery was announced as t+3 days. (Note: For convertible bonds and additional issuance, the drawing date is T+3; The lottery result is announced as t+4 days). The rules of the lottery are as follows: (1) The lottery adopts the method of "combining randomness with equilibrium", randomly shaking out the winning number or the basic winning number, and then adding or subtracting an equal number. The equal sign of increase or decrease depends on the winning rate. For example, five ten thousandths, first shake out a four-digit number as the basic winning number, and then increase or decrease it. (2) If the winning rate is 0.05622852%, Mr. Wang will be the winning number, and then the winning number will be generated according to six thousandths and two millionths. According to the generated lottery numbers, the number of lottery numbers is calculated, and then the remaining lottery numbers are generated. If it is an undivided scale, the scale is decomposed. (3) There is only one lucky draw for a number. If the subsequent numbers (including mantissa) are the same as the previously generated lottery numbers, the subsequent repeated lottery numbers will be cancelled and a new lottery number will be immediately shaken according to the lottery rules. 4. What kind of splitting method is used in the new share lottery according to the principle of "combining randomness with equilibrium". Examples are as follows: one thousandth, that is, randomly shake out a three-digit winning number; Two thousandths, first shake out a three-digit number as the basic winning number, and then increase or decrease by 500 to get another winning number; Three thousandths, divided into one thousandth and two thousandths, in the same way as above; Four thousandths, first shake out a three-digit number as the basic winning number, and then increase or decrease by 250 to get the other three winning numbers; Five thousandths, first shake out a three-digit number as the basic winning number, and then increase or decrease by 200 to get the other four winning numbers; Six thousandths, one thousandth and five thousandths, in the same way as above; Seven thousandths, divided into two thousandths and five thousandths, in the same way as above; Eight thousandths, first shake out a three-digit number as the basic winning number, and then increase or decrease 125 to get the other seven winning numbers; Nine thousandths, divided into four thousandths and five thousandths (Shenzhen Stock Exchange adopts the rule of 5+4), or one thousandth and eight thousandths (Shanghai Stock Exchange adopts the rule of 8+ 1), and the method is the same as above. 5. How to ensure the fairness of the lottery? First of all, the lead underwriter and the issuer organized the lottery under the supervision of the notary department during the whole lottery process. Secondly, the lottery method formulated according to the lottery rules has been recognized by the notary department, and the lottery is carried out in strict accordance with the formulated rules under the on-site supervision of the notary. Thirdly, if the lottery device fails during the lottery, the number shaken by the failed device will be cancelled, and the device will immediately shake a new lottery number according to the lottery rules. Fourthly, the corresponding computer test software system checks whether the number of lottery numbers shaken out is equal to the total number of lottery tickets. Fifth, because the stock market needs to shake the lottery, the lottery staff have been using this lottery method. After years of practice, it has been proved that this method is operable and fair. Attachment: Some lottery rules are simplified and summarized as follows: If the winning rate is 0.3%, the last three digits are "2+ 1", if the winning rate is 0.4% and the last three digits are "4", then the winning rate is 0.6% and the last three digits are "5+65438+" in 250 energy packages with continuous numbers. If the last three digits conform to the "5+2" rule, if the winning rate of 200 consecutive numbered energy packets is 0.8% and the last three digits conform to the "8" rule, if the winning rate of 125 consecutive numbered energy packets is 0.9% and the last three digits conform to the "5+4" rule, then the winning rate of 200 consecutive numbered energy packets is 0.9%.