... wound site. ♦ About Us Hangzhou Qiandao Lake Longer Biotechnology Co., Ltd.is a comprehensive manufacturing and trading company established in 2006 ... dressing,made of made of an absorbent layer of gel- Hydrocolloid (carboxymethylcellulose, chitosan, alginate,et al) that is incorporated ... ,15*15cm,15*18cm, OEM is also welcomed Hydrocolloid dressing (medical dressing,functional dressing moist dressing)