We are manufacturer and our products are sold all over the world. Q2:Can I request samples? Of course Free samples are available for any client according to customers' requirements. Q3:What is your product range? For heat seal filter paper, it ranges from 16.5gsm to 25 gsm. For non heat seal filter paper, it ranges from 12gsm to 14gsm.And the width can be customized too. Q4:What kind of packing machines does your product suitable for? All the main types of packing machines are suitable. like MAISA,IMA, CAMA,Constanta, Perfecta, Universal, NF, etc. Q5:Do you give inspection to the products before they come out of your factory? Yes,each order we will provide delivery inspection docs. Q6. how can we guarantee quality? Always a pre-production sample before mass production; Always final Inspection before shipment;And welcome third part for inspection.