Tullker Portable Ultrasonic Cleaner Immersion Vibration PlateFunction: Ultrasonic cleaning; Application:Degreasing,Rust removal,Dust removal,Wax removal; Suitable: Metal Parts,Oil Rust Parts, Engine block,DPF,Car parts,Motherboard,Hardware and so on. The default ultrasonic frequency of the machine shipped is: 40kHz. If you need 28kHz, please touch us. Thanks hint: 1. During cleaning, the&;&;ZiZi&;&; noise is normal. 2. The generator parameters are configured through mavens before shipment, please don't replace the parameters (except ultrasonic power) when using. 3. For the machine,always fill the unit at the very least two thirds water or liquid of the inner tank before use. About shipping: 1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO) 2. We solely deliver to shown order addresses. Your order handle MUST MATCH your Shipping address. 3. The pictures shown usually are not the actual merchandise and are in your reference only. 4. SERVICE TRANSIT TIME is supplied throughout the carrier and excludes weekends and holidays. Transit instances might vary, specifically through the holiday season. 5. If you've not acquired your cargo within the period, please contact us. We will music the cargo and come back to you as soon as possible with a reply. Our goal is guest satisfaction! Feedback: If you did not satisfy our service or If merchandise arrived damaged, part uncared for or merchandise no longer as described, please contact us ASAP. We will remedy the issue for you and try to make you satisfied. Further more, Please do not go away low ratings suggestions on our account earlier than getting solution because it might be a painful blow to us. On the contrary, your generously 5 STARS pleasant suggestions is an enormous motivation for us. Hope to get your comprehension!