Cara membeli gam kaca yang berkelayakan, sekarang berikan petua berikut
1. Look at the packaging. Qualified products should have the ten-ring mark certified by the National Environmental Protection Agency.
2. Test colloid. One --smell, two-- gloss, three-- particles, four-- bubbles, five --curing effect, six --tensile strength and viscosity.
3. See the purpose. Most glass plastic packaging will indicate the material that is suitable for bonding, and some will also indicate the bonding strength when different materials are bonded. Consumers are advised to read the instructions carefully when purchasing glass glue.