Clean B1 Industrial typically refers to a modern, environmentally responsible industrial facility with the following characteristics:

- No wastage: Operations are optimized to minimize resource waste and maximize efficiency.
- No fumes: The site operates with minimal or no emissions, ensuring a clean and safe environment.
- Data processing centre: Equipped with advanced servers and infrastructure for high-performance computing.
- Web hosting: Provides secure and reliable hosting services for websites and applications.
- Energy-efficient: Designed to reduce energy consumption through renewable sources and smart technology.
- Sustainable operations: Focus on eco-friendly practices such as recycling, water conservation, and waste reduction.
- High-tech environment: Features cutting-edge equipment and automated systems to enhance productivity.
- Strict health and safety standards: Ensures a safe working environment for employees and the surrounding community.

 A "B1 clean industry" in Singapore refers to light industrial activities that are considered clean and produce no noise or pollution, typically including: software development, data processing, warehousing, call centers, industrial training, product design and development, and certain biotechnology applications; essentially any industry that can operate near residential areas with minimal environmental impact. 
Key points about B1 industries:
Minimal nuisance:
Due to their clean nature, B1 industries usually require a smaller buffer zone compared to heavier industries (B2) when located near residential areas. 
Suitable for office-like environments:
Some B1 industries may have a more office-like setting, like software development or data processing. 
Examples of B1 clean industries:
Data centers: Storage and processing of large amounts of data
Call centers: Customer service operations
Research and development (R&D): Laboratories focused on clean technology development.