Main Board Market IPO Project of a pharmaceutical enterpriseComplete on-site visits of more than 10 suppliers and clients in North and East China;Carried out sampling test for all accounts, checked bank flow, integrated enterprise financial materials, wrote various explanatory documents, and updated all financial-ralated data of the prospectus from January to June 2021; Combined with the purchase and sales mode of the enterprise, analyzed the changes of GPM of five kinds of products from multiple dimensions such as self-produced&outsourcing and domestic sales&export sales, answered feedback questions related to revenue, cost, and gross profit.

SSE STAR Market IPO Project of a microeletronics enterpriseCalculated main financial ratios and analysed the ratios changed in big degree, writing“Financial Ratio Analysis”chapter of the Stock-into-market Tutorship Report;Executed walk-through tests and detail tests on purchase and payment, and sales and collection business cycle;Writing two parts called“Sales and Clients”and“Purchasing and suppliers" of Chapter“Business and Technology” of prospectus.

Growth Enterprise Market IPO Project of a manufacturing enterpriseAssisted in performing FDD on the cut-off on sales revenue and expenses, etc., incl. learning relevant accounting policies, exporting subsidiary ledgers, sampling, vouching, and writing the working paper;Found all related parties of the enterprise by TianYanCha, and reviewed business archives of 20+ corporate related parties, writing part of the Section Five called“Basic Information of Issuer”of the prospectus.

Built and renewed business and finance database of companies in PV industry；Consulted prospectuses, financial reports, and other relevant announcements, collected productivity information of main suppliers of silicon materials, silicon slice, solar cell, and PV module, made reasonable forecast on future (2020-2022) productivity;Participated in writing the deep research report of FORST (the global leading enterprise in EVA industry).

Two Annual Audit Project & 3402 Assurance Project on commercial banksIdentified key internal controls and main risk points in three types of credit business: corporate loan, personal loan, and credit card, executed ITAC tests, and submitted optimization suggestions on defections of these internal controls;Performed test of control to evaluate whether the current verification, classification and measurement of financial instruments were appropriate after the adoption of IFRS9;Tested suitability of design and operating effectiveness of internal controls in custody business modules, such as contract management, custody assets security, and clearing and settlement, and completed both Chinese and English assurance reports;Employed UE and SQL SEVER to filter and collate more than one million pieces of transaction data on various types of deposit and loan businesses, recalculated the amount of interest payable and interest receivable according to given interest calculation rules, ensured accuracy of the amount of relevant accounts;Led a group to execute tests on ITGC which involved five domains: ATPD, PC, PD, CO, and CE, provided clients with optimization suggestions to improve the level of IT risk management.