... ) materials, but our company uses the PT.Advantage: porosity is the finest and best,the battery ... Chip clapboard,but we use the separator envelopes.Advantage: Put the clapboard into each bag,even ... fall in bag, which can prevent plus-minus take electricity and growth using life 3. Slab lattice ... alloy, but we use alloy which containing alkenes.Advantage: porosity is smaller, less self-discharge. No ...