Notice on the Phase-out and Replacement of Inline Series Controllers

Issued by: Guangzhou Dongsu Petroleum D&E Equipment Co., Ltd.

Release Date: November 10, 2026

Dear Valued Customers and Partners,

Greetings. Recently, our company has received an official notification from our key supplier, Phoenix Contact Nanjing Co., Ltd. In compliance with the requirements of the EU Cyber Resilience Act (CRA), Phoenix Contact’s ILC 1xx series PLC controllers (ILC 151 ETH, ILC 171 ETH 2TX) will be fully phased out in 2027. No new orders for this series will be accepted effective April 1, 2027. To ensure smooth progress of our customers’ projects, we hereby announce relevant information.

The EU Cyber Resilience Act (CRA) will officially come into force in January 2027. To meet the new regulation’s requirements for full lifecycle product compliance, security and stability, Phoenix Contact will cease order acceptance and supply of Inline series controllers. Meanwhile, it has launched new generation controllers built on PLCnext technology that are fully CRA compliant as the upgrade replacement solution.

The new generation PLCnext controllers serve as a direct replacement for the legacy Inline series controllers. Compared with the original products, they deliver enhanced CPU computing performance, more efficient data interaction capability and more comprehensive functional scalability. They can fully satisfy the operational requirements of various oil and gas equipment projects and guarantee long term stable equipment operation.

To minimize risks to projects caused by this component iteration and ensure smooth project delivery and business transition, our company has launched product solution adaptation accordingly. For new projects, we will discontinue the use of legacy PLCs and fully switch to the new PLC model effective October 2026. The new PLC has been deployed in projects since early 2024, mainly configured for domestic explosion proof driller’s consoles as the PLC module for eEx enclosure certification. The legacy PLC is primarily applied to export projects with ATEX / IECEx explosion proof requirements. Since 2024, these two PLC variants have been selected and used in parallel according to actual project requirements.

Please feel free to contact our sales and technical teams. We offer end to end technical support including solution assessment, technical adaptation and replacement model selection to enable a seamless transition of equipment solutions.

For existing equipment already delivered to customers, there is in principle no mandatory requirement to replace with new generation controllers for units manufactured prior to the official enforcement of the new Act. Our company shall assume corresponding quality liabilities in accordance with applicable laws and the provisions of the original sales contract. Unlimited extended quality warranty will not be provided for circumstances beyond the contracted time limit or scope. In case a legacy PLC fails during operation, spare parts from the supplier’s stock are available for replacement within the next two years. Customers may also choose to carry out retrofitting in accordance with the new controller solution.

We will continue to deliver technical support services. Should you have any questions regarding project scheme adjustments or equipment retrofitting, please contact our sales or technical department promptly.

Thank you for your long standing trust and support for Guangzhou Dongsu. We will keep track of upstream component iteration updates, strictly enforce product compliance and quality control, and continue to supply safe and reliable drilling and production equipment as well as technical services for the oil and gas industry.

Guangzhou Dongsu Petroleum D&E Equipment Co., Ltd.

November 10, 2026