Jinan Xinghua Instruments Co.,Ltd
Address:No. 9 Jian Street Jinan Shandong China
Tel:+86-531-67880131
Fax:+86-531-86906490
Email:sales@xhinstruments.com
johnxhinstruments@hotmail.com
Website: http://www.xhinstruments.com
Technical Parameter:
Parameter of black and white checkerboard 25mm×25mm(Both colors have 16 lattices)
Overall Dimension :250mm×100mm