Clean Through

Clean Through is the 花王 cleaning product line highlighted in 卖香皂起家的百年花王，为什么成了半导体制造的关键企业？ as a Freon-alternative cleaner. The episode says Kao began selling it in 1991 after Freon solvents were being phased out because of ozone-layer damage.

The product matters because it is the bridge from consumer cleaning chemistry into electronics cleaning. Its early use case was removing flux after soldering electronic components, but the same underlying interface science and surfactant technology later became relevant to semiconductor precision cleaning.

Clean Through therefore appears as a route into chemical control as manufacturing capability. The source treats the product not as a standalone brand story, but as evidence that environmental regulation, materials science, and customer manufacturing problems can open a new industrial market.

Connections

• Kao / 花王 - company behind the product.
• Semiconductor Precision Cleaning - later manufacturing context.
• Interface Science / 界面科学 and Surfactant Technology / 表面活性剂技术 - technical basis emphasized by the episode.
• Semiconductor Supply Chain - broader chain where cleaning chemicals become a yield input.