1.Environmental Non-toxic, superior quality 2.Tightly sealed, welded seal of good performance 3.Thin tough, uniform thickness SUPERIORITYWITH A HIGH DEGREE OF TRANSPARENCY AND CONTRACTION RATES, ENVIRONMENTAL PROTECTION AND NON-TOXIC, TIGHTLY SEALING, WELDING PERFORMANCE IS GOOD, SEALED PACKAGING, DUST RESISTANCE WET, SOFT TOUGH, UNIFORM THICKNESS, APPLICABLE TO ALL PRODUCTS, AND OPERATIONAL ...