The pipeline, drip bucket, two-way, three-way, liquid filter and infusion needle seat of this product use PVC, the stopper piercer and infusion needle handle use ABS, the piercer sheath, flow adjustment wheel, air filter, The infusion needle sheath is made of PE, the flow regulator shell is made of PP, and the intravenous infusion needle is made of austenitic stainless steel needle; it is sterilized with ethylene oxide, and the product is sterile and non-pyrogenic.