1.Brand recognition.Effective registered trademark, distinct image recognition, reasonable price positioning and perfect after-sales service are the standards for brand products.

  2.Look at the packing.A look at the carton whether there is the name of the product, the name of the manufacturer, specifications, origin, color, date of delivery, carton whether there is a certificate of quality, quality assurance certificate, product inspection report;Second, see whether the usage, usage and matters needing attention on the plastic bottle are clear and complete;Third, to see whether the net content is accurate, the manufacturer must indicate the specification model and net content (unit gram or milliliter) on the packaging bottle.

  3.Check the colloid.One smell, two than luster, three check particles, four see bubbles, five test curing effect, six test tension and viscosity.

  Glass glue scientific name silicone sealant, most manufacturers on the market has never listed the environmental protection level of the product as an important technical index.Most glass gels are known to have a pungent odor, but these are actually volatile organic compounds VOC, which can be very harmful to human health.Under normal circumstances, the glass glue of big brand is not only more stable in quality, but also will not send out irritating smell, which can ensure the health of all people who come into contact with the product.You are advised to minimize contact and open Windows for ventilation for a long time.