WEIYE Level Apparatus Co., Ltd. is the biggest level bubble manufacturer in China.Weiye Level Apparatus Co., Ltd. is a mainly focused on researching and developing, producing and selling of spirit level bubble. The products contains glass, metal, plastic spirit level bubble, bubble components, single or dual-axis optical bubble, optical sensor, resistance electric bubble, electric compensator, ***** WEIYE is the main supplier of many enterprises, such as TOPCON, FOIF, BOIF SOUTH, TJOP, SOKKIA.