Suzhou Mason Electronic Technology Co., Ltd. was located at Suzhou which is called Heaven on Earth and is only 20-30minutes away from Shanghai by train and 1 hour by car on the expressway that links the two cities. We are a professional manufacturer for all kinds of surveying instrument accessories including batteries, chargers and cables for total station and GPS. 
For your One Stop Solution for the survey accessories, we also supply the other survey accessories like mini prism, prism set,  tribrach, adpater, prism pole, wooden and aluminum tripod, staff, etc...