Certificate
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Patent
- Patent Total of 9, including PCD
- International patent Total of 1 including Asymmetric Punched spiral Pipe (Vietnam)
- Utility modelTotal of 7, including anchor plate with serrated fixture
- Design Total of 5 including drain board core material for soft ground
- TrademarkPCD
- Patent application Total of 17, including patents, utility models, designs, and trademarks