Profile: Markperi International Inc. offers industrial radio frequency equipment, RF heat sealer, RF welding and 3KRF sealing used in medical industry. Radio frequency (RF) welding/sealing is an essential process in the manufacturing of products for the medical industry such as the intravenous (IV) fluid bags used to collect blood, urine and other bodily fluids. RF sealing entails the creation of radio frequency waves to generate heat that welds two or more layers of plastic film together. The molecular action produced by the RF waves is akin to cooking food in a microwave oven. Effective RF welding relies upon the use of appropriate techniques and equipment, along with high-performing RF tooling, to ensure the finished product contains a strong seal.