Hello everyone, we come from Shenzhen, China. We have a 20 year history and specialize in producing water treatment filter cartridges, such as polypropylene melt blown filter cartridge PP, granular activated carbon filter cartridge UDF, compressed activated carbon CTO, RO membrane reverse osmosis filter cartridge, and rear activated carbon filter cartridge TT3 (to improve taste). We have advanced equipment and strict quality inspection processes to ensure the high quality of each filter cartridge. MOQ50 pieces, supporting ODM and OEM, quick customization, delivery within 3 days (up to 10000 pieces).We are a factory with strong capabilities and are very professional. What products do you need? We are always ready. Welcome to inquire.