The weather resistance effects of composite light stabilizer JC-568 in PVC-U section materials were studied through experiments.
通过试验，研究了复合光稳定剂JC- 568在PV C - U型材中的耐候稳定作用。
The weather resistance effects of composite light stabilizer JC-568 in PVC-U section materials were studied through experiments.
通过试验，研究了复合光稳定剂JC- 568在PV C - U型材中的耐候稳定作用。
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