Our company’s main products are H50ps series pressure switch,H20ps series pressure switch.Company's products are widely used in air conditioning and refrigeration fields.We received customer praise many times and win the honor of quality. Our company is a reliable unit of quality.Company’s products through the CCEE certification, CQC certification, IOS9002 international certifaction , ISO9001:2000 version of the certification.In 1999 H20ps series pressure switch through the United States UL certification, thus opening the international market.