Changshu   Huier   Petrochemical&Chemistry   Instrument   Co.,Ltd., founded  in  2001  and  located  in  Changshu  City,Suzhou,Jiangsu  Province,covers an area of 15,000 m²(with a factory building area of  18,000  m²).As  a   high-tech  enterprise   integrating  R&D,production,  and sales,it focuses on automation equipment and instruments.The  company specializes  in  manufacturing  advanced  products  such  as  high-performance   intelligent   electrical   valve   positioners,mechani-  cal-electrical  valve  positioners,electrical  converters,air  filter  regula-  tors,and limit switches (signal indicators).It has passed the ISO 9001  International Quality Management System certification.Our products  have  been  tested  and  qualified  by  the  National  Supervision  and  Inspection  Station  for  Explosion-proof  Safety  of  Instrumentation,  obtaining the National Explosion-proof Certificate,as well as 3C,CE,  and SIL3 certifications.Widely applied in industries such as petroleum,  chemical       engineering,power,metallurgy,building       materials,light  textiles,papermaking,and  food,these  products  are  also  exported  to  multiple  countries  and  regions  including  the  United  States,Japan,  Germany,France,South  Korea,India,Southeast  Asia,South  America,  and Africa.We are cooperating with domestic and foreign scientific  research institutes and enterprises,the company has earned trust and  praise  from   supporting   units   and   design   institutes   through   its  high-quality   products,advanced   technology,rigorous   management,  and comprehensive services.