A. It is in good condition and made of good materials, which makes it more durable. B. It is exquisitely beautiful and highly compatible with the device. C. It is sturdy and has a relatively long service life. D. It is advisable to replace the spare parts every 2 to 3 months to maintain the machine's performance. E. It is made of good materials and is quite durable. F. The accessories are sturdy, durable and easy to install. G. Color: Blue H. Material: Plastic I. Package contents: J. 12 air filters with relatively high efficiency K. Only the above package contents are included, and other items are not included. L. Note: Light and different monitors may cause slight differences between the color of the item and the actual one. The allowable measurement error is ±1 - 3 cm.