"Your have very high quality filters and separators.Customers even note a reduction in oil entrainment when using SG separators and long-term oil purity,which confirms the high quality of air and oil filters.I still consider our partnership promising." the Kazakhstan client stated sincerely during communication. Since the start of cooperation three years ago, the client has consistently recognized Sange’s product quality and service capabilities. To date, there has not been a single quality complaint or product return in three years of cooperation. Many end customers even reorder repeatedly due to the products’ high stability and long service life, forming a positive market reputation cycle.
The April delivery included various air oil separators and filter elements for industrial air compressors. Upon receipt, the client immediately put the products into actual working condition testing and end-customer trials. Notably, the WD13145 filter model was disassembled and inspected after 1,600 hours of continuous operation on a 250kW air compressor. The results showed that the filter element’s filtration performance remained above qualified standards and its structure was intact without damage. The client commented directly: "The quality of this filter is the best we have ever used. At its current condition, it can operate stably for at least another 1,000 hours."
In long-term market services, the client has encountered several abnormal feedback cases of oil mist entrainment. However, based on years of industry experience, investigations revealed that the root causes were not with Sange’s filter products, but with other links in the air compressor system—such as clogged drain valves, abnormalities in compressed air pipelines (pressure exceeding 5.5 bar with a sudden flow increase), or excessive oil filling in the equipment. Whenever the client encountered such issues, Sange Company’s technical team provided remote support promptly, assisted in troubleshooting one by one, and guided equipment commissioning. After the problems were resolved, the oil mist entrainment disappeared immediately without replacing separators or filters.
"These cases have made customers deeply feel our professional service capabilities and strengthened their trust in Sange’s product quality," the client said. It is Sange Company’s excellent product quality and full-process technical support that have made more and more local customers willing to purchase SG series filters for the long term. Currently, the scale of cooperation between the two sides is steadily expanding. The client also admitted that delivery of some models could be improved due to local market supply and demand rhythms, but this has not affected their confidence in deepening cooperation.
As a high-tech enterprise focusing on the R&D, production and sales of filters, Jiangxi Sange Filter Manufacturing Co., Ltd. has always taken quality as its core competitiveness since its establishment. The company now owns more than ten patented technologies and has established long-term industry-university-research cooperation with South China University of Technology, forming unique technical advantages in filters for air compressors, industrial dust removal and other fields. Located in Shipai Industrial Park, Xunwu, Jiangxi, the company relies on sound local industrial supporting facilities and intelligent production equipment to achieve full-process quality control from raw material procurement, production and processing to finished product inspection, ensuring every batch of delivered products meets the stringent standards of the international market.
Three years of continuous cooperation is not only recognition of Sange Company’s product quality, but also affirmation of the company’s business philosophy of "Customer-centric, Quality-built Brand". Amid increasingly fierce international market competition, Sange Filters always adheres to customer demand orientation, continuously optimizes product performance and improves service levels, and has won reputation and trust in the Kazakhstan market with excellent product quality. In the future, the company will continue to deepen the international market, join hands with global customers for win-win cooperation with better products and more professional services, and build an international showcase brand of China’s filter manufacturing.