WuXi SenQian Mechanicl Instruments Co.Ltd
 WuXi SenQian Mechanicl Instruments Co.Ltd is a high-tech enterprise which integrates optics, mechanism, electricity and software program. We are researching and producing the high quality products with reasonable price for our customers.
 
 
 
Guangdong Rational Precision Instrument Co., Ltd. is a high-tech enterprise which integrates optics, mechanism, electricity and software program. We are researching and producing the high quality products with reasonable price for our customers. We have passed ISO9001:2008 Certification and our major products have passed CE certification. Our products have been sold not only domestic but also exported to many countries and areas, such as Korea, Holland, Thailand, France, America, Malaysia, Iran, Brazil, Taiwan and so on. Excellent quality cost ratio makes our company being recognized by our customers.
 

1) In 1996, established Wan Hao Precision Instrument (Hui Yang) Co., Ltd
 2) In December 1999, moved to Chang An town, Dong Guan City
 3) In December 2000, Wan Hao recombined asset and established Rational Precision Instruments Co., Ltd
 4) In December 2002, main products passed CE
 5) On June 2003, was awarded High-tech enterprise of Guang Dong Province. On 12, was awarded
 6) In January 2004, passed ISO9001: 2000
 7) In July 2004, incorporated 3 workshops
 8) The products have undertook 3 phase as follows
 　I. Concentrate on researching and producing phases digital measuring instruments.
 　II. Concentrate on researching and producing 2D and 2.5D measuring instruments.
 　III. Concentrate on researching and producing 3D measuring machine which indicates the highest level in this field.
 In 1998, we developed the linear scale which firstly adopts single lamp-house and photodiode in CHINA
 In 1999, we developed the special IC for DRO. The readings can reach 13.3MHZ
 In 2001, we developed the first erect projector in CHINA, which can be compared to the foreign similar products.
 In 2002, we developed DC-3000 multi-functional data processor which was widely used in checking and measuring machines.
 In 2003, we developed USB linear scale exchanger, which could connect the linear scale and PC
 In 2004, we developed CNC video measuring system and stepped into the high range of this field.
 In 2005, we developed grating IC with phase compensation function. In the mean time we developed the 3D measuring machine.