hi
this is shuangchao ultrasonic company ,we produce all kinds of ultrasonic machines and specialized in this field for more than 10years
if u have any interested in them ,pls contact us
my whats app :+8615051980696
contact shelly
tel 0086-15051980696
whats app /we chat +8615051980696
Skype zifeiyu88@163com
qq 286188224
email zifeiyu88@163com
fax 0086-0519-86761819
waiting for u and have a good day