contact number:
0563-6725566
The HMHC brand leverages HEHE New Materials' two decades of precision coating technology expertise, rigorously adheres to ISO 9001 quality management standards, implements 50 quality control steps, and conducts 1,000+ durability tests across 265 environmental conditions.
Technical Accumulation and Process Refinement
Quality Control Test
Weather Resistance Test
HMHC Matt
TPU
7.5±5%MIL
/
≥55%
≥120%
≥ 300%
≥ 120%
Shuangjie Pen
wiped with alcohol and lint-free cloth
slight traces
10%NAOH、10%H2S04 Solution for 48HR
Pass
1KG pressure/copper brush 70℃ 3MIN
Self-Healing of scratches
20MIN:≥ 1300
24HR:≥ 1600
(GB/T 2792-2014)
1000HR: No yellowing, cracking, dissolution, or other abnormalities.(ISO 11507-2007UVA340)
6 years