Zhejiang Shangyu Oil Seal Co., Ltd ( PQK Oilseal Co., Ltd) , firstly established in 1969, is one of the largest companies combining research, development and production, which specializes in the....
For many years, Deqing Huayu Pen company has professionally produced gluetype polyester pen-nibs. Also our company has developed independently a series of products, such as water-color pen nib ....