Recently, Taigang Petrochemical Environmental Protection Technology Co., Ltd. sent a letter of thanks to BGT for its execution work on the ethylene waste lye freezing crystallization zero-discharge salt separation unit of Tianjin Petrochemical Nangang 1.2 million tons/year ethylene and downstream high-end new materials industry cluster project.

During the crucial construction process of this unit, BGT, with its outstanding strength, has gradually turned the vision of zero discharge from a blueprint into reality. With BGT's full support and the joint efforts of all on-site operation personnel, the project objectives were completed with guaranteed quality and quantity. The by-product sodium sulfate produced through system commissioning reached Grade A first-class product standard, achieving excellent results and winning recognition from all parties involved.

Faced with the tight construction period and heavy tasks, BGT has always adhered to the tenet of selfless dedication and wholehearted service to the owner and the project. It quickly deployed professional personnel and actively responded to challenges. Upholding the aim of serving the owner and the project, BGT assisted all parties in efficiently solving engineering problems, successfully achieving all node objectives with excellent performance. In this regard, Taigang Petrochemical expressed its sincere gratitude and hoped that on the basis of sincere cooperation, both parties could enhance exchanges and move forward hand in hand.

BGT has been deeply engaged in the field of industrial wastewater resource utilization for 20 years. Starting from the initial membrane cleaning services, relying on its continuously accumulated technical heritage, it has gradually broken through service boundaries and transformed into a comprehensive listed group integrating wastewater resource utilization, comprehensive development of salt lake resources and mineral development. BGT expresses its deep gratitude to Taigang Petrochemical Environmental Protection Technology Co., Ltd. for its recognition, full trust and strong support. Look ahead, we are full of expectations and willing to go hand in hand with Taigang Petrochemical in the new year to jointly paint a brilliant new chapter!

Letter of Thanks

BGT Group Co., Ltd.,

During the arduous process of tackling the ethylene waste lye freezing crystallization zero-discharge salt separation unit for Tianjin Petrochemical Nangang's 1.2 million tons/year ethylene and downstream high-end new materials industry cluster project, your company has been with us all the way. With your outstanding strength, you have forged the brilliance of the project and gradually turned the vision of zero discharge from a blueprint into reality.

In the process package development stage, your company formed an elite scientific research team, fully committed to the development of the process package. You conducted in-depth research on the complex composition and characteristics of ethylene waste lye, and pioneered a precise process route for freezing crystallization salt separation with zero discharge by applying cutting-edge technologies. In terms of equipment supply, you strictly required that the equipment materials meet the harsh working conditions, ensuring corrosion resistance and temperature change resistance to guarantee the durability of the equipment.

Since the start of the project, with the strong cooperation of your company and the joint efforts of all on-site operation personnel, the node objectives required by us have been completed with guaranteed quality and quantity. The by-product sodium sulfate produced through system debugging has reached Grade A first-class product standard, achieving excellent results and winning recognition from all on-site parties and users! In this process, we have witnessed your company's high attention to this project. Faced with a tight construction period and heavy tasks, your company promptly arranged professional personnel on-site to overcome difficulties and catch up with the schedule. Adhering to the attitude of serving the owner well and serving the project well, you assisted all on-site parties in working overtime to quickly handle various problems arising in the project, successfully completed all node tasks with qualified performance. The selfless dedication and the philosophy of wholeheartedly serving the owner demonstrated by your company have left a deep impression on us. For this, we express our sincere gratitude to your company for truly considering our interests and giving strong support to our work! We also hope that on the basis of sincere cooperation, our two companies will further strengthen exchanges and move forward harmoniously together!

Finally, we wish your company a thriving business and increasing brilliance!

Taigang Petrochemical Environmental Protection Technology Co., Ltd.

January 2025