This machine is a handheld sealer for composite bags. It is easy to operate with a thermostat. It is widely used in the packing industry. 1. TEMPERATURE CONTROL: It adopts electronic temperature control with a wide range of temperatures, which is applicable to different materials.2. HEATING BLOCK: It is made of high-quality materials 3. MATERIALS:The structure is made of stainless steel (1) and is sandblasted (2). It is durable and corrosion-resistant..syi