We are Baotou Dongbao Bio-tech Co., Ltd. Our factory collagen is type â… could be used for producing collagen peptide nutrition supplement. We could service for ODM of collagen powder with high quality raw material, award-winning packaging design, and con
Conventional two-way direct acting normally closed solenoid valve:â—The main body can be divided into brass forging and stainless steel frosting.â—Large diameter and large flow.