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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| HG/T 4174-2011 |
Strengthened ultra-pure PFA tube heat exchanger 超纯pfa列管加强式换热器 |
China Chemical Industry
Standards PFA |
 English PDF |
| HG/T 4173-2011 |
Packed tower lining ultra-pure PFA sheet 超纯pfa板衬衬里填料塔 |
China Chemical Industry
Standards PFA |
English PDF |
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