Yunnan Tongwei High-Purity Silicon Co., Ltd., established in April 2020, is a high-tech enterprise specializing in the research, development, production, sales, and technical consulting of high-purity silicon (polysilicon, monocrystalline silicon, and electronic-grade polysilicon), dedicated to the development of clean energy. The first phase of its 50,000-ton high-purity silicon project has been fully and successfully put into operation.

In 2021, Hope Deepblue supplied the first phase of the Yunnan Tongwei project with a steam LiBr absorption chiller and four hot water LiBr absorption chillers, providing refrigeration for both process and air conditioning purposes. These units have been running successfully since their commissioning and delivery.

During the three years of operation, the users and our sales and after-sales departments have engaged in numerous friendly exchanges, constantly staying informed about our product upgrades, scientific operation, maintenance of the units, and system optimization. Our professional sales team has greatly facilitated communication and coordination, providing real-time feedback to the after-sales team. The after-sales team, together with the technical and production departments, formulated and implemented various plans. We achieved optimizations in energy-saving plate heat exchangers, software upgrades, and PID adjustments, and provided 24-hour online monitoring services. Tailored energy-saving plans based on actual on-site usage were developed, and issues were resolved through remote guidance or immediate on-site visits, earning the user's full recognition and trust.