... 8025Micro-fiber wiper series was weaved with 50D 36Fx16P polyester and nylon, ,sealed by laser or ultrasonic cutting,washed by 18MΩ ultra ... inner bag sealed and dealt with anti-static.KB-3009 100%micro-fiber,sealed by laser or ultrasonic cutting, and washed by 18M ... Double packaging KB-4009A microfiber is weaved with 75D 36Fx16P polyester and nylon,sealed by ultrasonic cutting, and washed by 18MΩ ultra ...