Use the PVC material, can take out oil, water and other liquid.1) DP-25Outer packing:30pcs / ctn2) DP-23Outer packing:48pcs / ctn3) DP-15Outer packing:60pcs / ctnCarton dimensions:78x32x53 cm4) DP-14O

Outer packing:90pcs/ctnCarton dimensions:56x46x56 cm

Use the material of PU and PVC, and steel framework, the sizes from 2 inch to 10 inch, suit for aeration, feeding liquid etc.Such as the no. 2 in the photo

There are steel framework inside, plating copper, have the size from 4 to 10. Can extend freely.Such as the no. 1 in the photo.

Use the transparent and innocuous material, and steel framework, inner diameter have: 9, 12, 15, 19, 25, 32, 38, 44, 56, 63mm, can use in foodstuff, sanitation, suit for exhaust, airiness etc. in the

Use the spring framework, we have different sizes: 25, 32, 38, 39, 40, 45Such as the no. 5 in the photo

Use the steel framework, can flex freely, the caliber from 38 to 203, suit for motion air-conditions and exhaust etc.Such as the no. 7 in the photo.

The material is aluminium and platinum, it is able to bear hot and fireproofing, can use for water heater, fanner, ventilator, center air-condiction, and also can cleanse the workshops exhaust and aer

Use the aluminum foil and steel framework, can use in exhaust, airiness etc.