Winter and summer work effect difference is big, that is because summer weather is hot, indoor temperature is high, the product is not easy to absorb water, winter weather is cold, indoor temperature is low, the air is humid, the product absorbs water, another because the weather is wet and cold, the person does things is also timid.

Ultrasonic compound machine is using high frequency vibration wave to the two or more need to welding material surface, in the case of pressure, make the material surface rubbing against each other and form, the fusion between the molecular layer to cloth and cloth, fabric and chemical fibre materials such as cotton, plastic film and plastic film, fabrics, non-woven fabrics, spray adhesive cotton sponges and welding materials, welding to complete. Therefore, there is no low efficiency of ultrasonic composite machine in winter.