On 1 March 2021, Anhui Conch Cement Company Limited and Conch Design Institute entered into the Engineering Project Design and Technology Service Contract. According to the such contract, Conch Design Institute shall provide certain subsidiaries of the Company with services including engineering design and/or technology transformation of clinker production lines, cement grinding system, aggregate and commodity concrete projects. The contract price amounted to RMB120.16 million (equivalent to approximately HK$143,935,220 note1). On 1 March 2021, Anhui Conch Cement Company Limited and Conch Design Institute entered into the 2021 SCR Denitration Technology Modification EP Contract, pursuant to which Conch Design Institute will provide SCR denitration technology modification services for the three clinker production lines of the Company's three subsidiaries. The contract price amounted to RMB37.5 million (equivalent to approximately HK$44,919,863 note1). On 13 November 2020, the Company and Conch Design Institute entered into the 2020 SCR Denitration Technology Modification EP Contract, pursuant to which Conch Design Institute agreed to provide SCR denitration technology modification services for the five clinker production lines of another three subsidiaries of the Company. The contract price amounted to RMB67 million (equivalent to approximately HK$78,376,323 note2 at that time).