Understanding the Ror.Ng.4 License: A Factory Setup Checklist

Wondering what a Ror.Ng.4 is? If you're planning a factory, this license is essential. This article breaks down what it is and simplifies the application process, ensuring your industrial business starts off correctly and remains fully compliant with the law.

What is a Factory Operating License (Ror.Ng.4)?

A Factory Operating License, commonly referred to as "Ror.Ng.4," is a critical document issued by the Department of Industrial Works (DIW) to certify that a business is authorized to operate legally under the Factory Act B.E. 2535 (1992). This license serves as official confirmation that your facility meets government standards regarding operational practices, pollution control, and safety systems.

Why is the Ror.Ng.4 Crucial for Entrepreneurs?

Legal Compliance and Risk Mitigation: Holding this license ensures your business operates smoothly in accordance with regulations, minimizing the risk of forced shutdowns or legal action.
Building Credibility: The license demonstrates your commitment to environmental and social responsibility, fostering confidence with business partners, clients, and investors.
Access to Government Benefits: Legally registered businesses gain easier access to government support, such as tax incentives or specialized business loans.

Which Factories Require a Ror.Ng.4?

By law, factories are categorized into three groups based on their size and potential impact:

Type 1: Small-scale factories with less than 20 horsepower (HP) and fewer than 20 employees. These can commence operations immediately without a permit.
Type 2: Factories with 50–75 HP and 50–75 employees. These do not require a formal license but must officially notify the relevant government authorities before starting operations.
Type 3: This is the primary group that must obtain the Ror.Ng.4. It includes large-scale industrial factories with more than 75 HP or more than 75 employees, as well as businesses that pose potential environmental risks, such as chemical plants or industrial waste management facilities. These operations must undergo a rigorous evaluation process before being granted the license.

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Step-by-Step Guide: How to Obtain a Ror.Ng.4 License

The application process for the Ror.Ng.4 license can be summarized in the following steps:

Site Location Assessment and Environmental Impact Evaluation

Verify the site isn't in a dense residential area and complies with city zoning laws before proceeding with your factory application.

Prepare All Essential Documents

Form Ror.Ng.3, Corporate Affidavit, Copy of National ID Card, Land Title Deed, Factory Building Plan, Machinery Installation Layout, Copy of Construction Permit

Submit the Application to the Responsible Authority

Submit the documents to the Provincial Industrial Office in the area where the factory is located.

Site Inspection and License Approval

After submitting the documents, officials will conduct an on-site inspection of the factory location.

Update: Does the Ror.Ng.4 License Really Never Expire?

Yes. Current regulations have been updated to make the Factory License (Ror.Ng.4) permanent. You can continue using your original license for the lifetime of your business without needing to apply for a renewal.

Important Conditions:

Annual Fees: You must consistently pay the required annual fees.
Self-Declaration: You are required to log into the system to perform a "Self-Declaration," certifying that your facility continues to meet all safety standards and legal requirements.

Elevate Your Facility with Intralogistics Solutions

Once your factory is officially licensed and operational, optimizing internal efficiency and safety is your next critical mission. Jungheinrich is ready to support your industrial growth with innovative material handling equipment tailored to your real-world needs.

Boost Precision and Agility: Utilizing high-standard forklifts ensures accurate and efficient movement of raw materials and goods.
Maximize Vertical Space: For warehouses looking to optimize storage, integrating our Reach Trucks with systematically designed industrial racking systems allows you to organize inventory effectively and maximize every square meter of your space.
Flexible Financial Options: If you are looking for capital flexibility, we offer forklift rental services. This is an excellent way to control operational costs, reduce long-term maintenance burdens, and ensure your factory continues to operate at peak potential.

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FAQ

What are the penalties for operating a factory without an Ror.Ng.4 license?

Operating a Type 3 factory without a license is a violation of the law. Operators may face a prison sentence of up to 2 years, a fine of up to 20,000 THB, or both.

How long does the Ror.Ng.4 license approval process take?

After the officials have received all complete documents and conducted the on-site inspection, the approval process typically takes approximately 30–60 business days.

Do I need to apply for a new Ror.Ng.4 license if I want to add machinery or expand the factory area?

If your business undergoes significant structural changes—such as increasing the machine horsepower, expanding the factory area, or changing the business owner—you are required to file a request to amend your license or apply for a new Ror.Ng.4 license to ensure it accurately reflects your current scale and operations.