... flowing material large capacity high efficient Double Screw Feeders:1.Picture2.SpecificationDouuble Screw Feeders is manufactured to feed and transport materials, ... particles,etc.There are many inelts and outlets for screw feeders. 3.Warranty TimeWe provide one year for quality time ... at buyer's option 5.Customer's NoticeDouble Screw Feeders are not standard.We design,quote and manufacture according to ...