Investor Presentaiton

Plastic piping systems business: revenue analysis Gas 1.7% Power supply & tele- By communication application 17.2% Drainage 38.0% By material Non-PVC (2) 37.9% 2020 Gas Others (1) 4.5% 1.7% Power supply & Water tele- supply 38.6% communication 17.5% PVC 62.1% (1) ลิ Total pipe products revenue: RMB 24.512 billion Others include agricultural applications, floor heating and fire services (2) Non-PVC includes PE, PP-R. etc Drainage 37.8% Non-PVC (2) 38.3% 2021 Total pipe products revenue: RMB 27.457 billion Others (1) 5.3% Water supply 37.7% PVC 61.7% 15

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