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The discovery and development history of fluorescent whitening agents

The discovery and development history of fluorescent whitening agents

The colorless substance horse chestnut bark (scientific name: 6,7-dihydr...
2023-02-22
Zhejiang Hongyi Chemical Co., Ltd.
Happy New Year!

Happy New Year!

2023-01-21
Zhejiang Hongyi Chemical Co., Ltd.
Hongyi Chemical wishes you a happy New Year!

Hongyi Chemical wishes you a happy New Year!

new year new atmosphere Hongyi Chemic...
2023-01-01
Zhejiang Hongyi Chemical Co., Ltd.