Shenzhen Dolnsi Environmental Protection Equipment Co., Ltd.

Shenzhen Duolunsi Water Purification Equipment Co., Ltd. is an excellent high-tech enterprise established in 2014 integrating R&D, production and sales of water purification equipment. The products cover household water purifiers, kitchen water purifiers, and whole house water purifiers. Water purifiers, central water purifiers, engineering water purification equipment, energy direct drinking machines, pure water machines, water softeners, outdoor sports water purification products. It is widely used in household, medical, sanitation and other industries. Over 1000 agent dealers nationwide, mature market promotion and after-sales service system.
At the same time, we have our own large-scale testing laboratories, microbiology laboratories, water quality research and analysis laboratories in major cities across the country, polymer materials performance structure laboratories, dynamic water hammer laboratories, materials blasting laboratories, and electrical fatigue life experiments. Environmental Alternating Program Control Laboratory Oxygen Reduction Adding Standard Laboratory, Turbidity Standard Adding Laboratory, Local Metal Adding Standard Laboratory, TDS Standard Adding Laboratory, Anti-Port Selection Membrane Performance Testing Laboratory, Ultrafiltration Membrane Laser Counting Testing Laboratory . Cooperated with the University of Luxembourg in Germany to develop the patented GPAN ultrafiltration membrane technology and the MTF patented technology for the first time and successfully went public, becoming the industry pioneer. From 2015 to 2017, Dorrance independently innovated and developed a number of three-dimensional integrated waterway plate reverse osmosis direct drinking fountains, and obtained the invention patent for the control method of energy-saving micro-concentrated water reverse osmosis device, and double-depletion dual-core series micro-concentrated water reverse osmosis Invention patents for tube installation and method, and invention patents for a reverse osmosis water purifier automatic cleaning and sterilization system. Years of OEM/ODM. Production experience.
As a responsible enterprise, we always adhere to the integrity of management, independent innovation of the core values, attaches great importance to product quality control. All products are fully tested and shipped from the factory. We sincerely serve every customer with a warm attitude, strict practice of the spirit of the contract.