We received the inquiry from this customer in USA about 3 month ago and he need us to provide the automatic packing solution for his small screws. The length is about 40 mm , 100g~1000g/ bag, his company LOGO and the product information need to be printing on the bag . Accuracy is about 1~3 pcs/bag, speed is 20~30bag /min , so we introduced the below multihead weighing machine .