... OEM factory product:15kg,20kg,30kg,50kg,70kg,100kg washer extractorUse:SXT-F Series Washer-extractor is suitable for hotel, restaurant, garment factory, ... adding weight at the front of suspended object, so that reach perfect balance of suspended object. Spring of vibration proof ... design of recovery moment according to different vibration of suspended object front and back, so that finish the best ...