Whatsapp
our quality better than internation strandard
| test items | our factory criterion | international /indirstial criterion |
| pencil hardness | ≥2H | ≥F |
| bend test | ≤3T | ≤5T |
| shock test | ≥9J | ≥9J |
| MEK test | ≥100 | ≥100 |
| scratch test | ≥1500g | / |
| (5%HCL) sour test | ≥24h | ≥24h |
| (5%NaOH)alkali test | ≥24h | ≥24h |
| salt spray test | ≥1000h | ≥480h |
| (QUVA)QUVA test | ≥1000h | ≥600h |