TUW-71DA/72DA Precision Cleaning Series Electronic Fluorinated Liquids, Empowering Domestic Substitution

3M Novec™ 71DA/72DA to be Fully Discontinued by the End of 2025
Shenzhen Huayi Brother Technology Releases High-Performance Domestic Substitution Solutions
Did you know? Every high-end chip requires hundreds of precision cleaning processes before leaving the factory. A type of "precision cleaning agent" is now driving a major overhaul across the entire semiconductor industrial chain.
3M officially ceased accepting new orders for Novec™ 71DA/72DA on March 31, 2025, and will fully discontinue all PFAS-containing products by the end of 2025.
Against this backdrop, Shenzhen Huayi Brothers Technology Co., Ltd. has officially launched the TUW-71DA and TUW-72DA precision cleaning series of electronic fluorinated liquids, delivering high-performance domestic substitution solutions for industries including semiconductor manufacturing, electronic precision assembly, and optical component cleaning.

Precision cleaning serves as a core process in high-end manufacturing sectors such as semiconductor production, electronic assembly, and precision instrument processing. As manufacturing process nodes continue to shrink to smaller dimensions, stricter standards have been imposed on the cleanliness, safety and environmental performance of cleaning technologies.
Phase-Out of Traditional Solvents
❌ Conventional solvents including CFC-113 and trichloroethylene cause ozone depletion (ODP>0) and feature flammability and high toxicity.
✅ Innovative hydrofluoroether cleaning agents, with zero ODP, non-flammability and low toxicity, represent the mainstream development trend.

⚠️ 3M’s discontinuation of PFAS-containing products has triggered profound changes in the global supply chain.

• ✅ China’s domestic hydrofluoroether industrial chain is advancing toward accelerated improvement.

Changlu New Materials, a subsidiary of Tianjin Changlu Haijing Group, successfully completed one-time commissioning and trial operation of its hydrofluoroether project on January 30, 2026. High-purity Hydrofluoroether 7100 was officially mass-produced, filling the domestic capacity gap in the high-end hydrofluoroether segment.

• Total Project Investment: Nearly 500 million RMB

• New Annual Production Capacity: 2,000 tons  

This solid raw material supply foundation strongly underpins the domestic substitution of TUW-71DA/72DA.

TUW-71DA and TUW-72DA are domestically produced precision cleaning solvents developed by Shenzhen Huayi Brothers Technology Co., Ltd., engineered as direct equivalents to 3M™ Novec™ 71DA and 72DA. They are widely applicable to vapor degreasing, precision component cleaning, lubricant residue removal and other scenarios.

Parameter Item	Specification
Chemical Composition	Methyl nonfluorobutyl ether + trans-1,2-dichloroethylene + ethanol (ternary azeotrope)
HFE Component CAS No.	163702-07-6 / 163702-08-7
Appearance	Colorless transparent liquid, nearly odorless
Boiling Point	40°C
Freezing Point	-29°C
Density (25°C)	1.33 g/cm³
Surface Tension	16.4 mN/m
Viscosity (25°C)	0.45 cps
Vapor Pressure	381 mmHg
KB Value	33
ODP	0
GWP	≈157
Flash Point	None (Non-flammable)

TUW-72DA Vapor Degreaser