Prosol Chemicals Pvt. Ltd. Manufactures Prosol ULC Chemical. Prosol Chemicals Pvt. Ltd also offers metal-working, metal treatment and metal protection products for the Engineering Industry. The Prosol ULC Chemical is an aqueous ultrasonic cleaning chemical used for cleaning of various metals, optical, jewellery and precision electronic components. It can be used in place of costly and hazardous chlorinated solvents.