Holykell has been committed to the development, production and sales of HPT600 series liquid level sensor, HPT200 series and HPT300 series pressure sensors, HPT619 series and hpt612-w series wireless pressure liquid level products. Especially the company has a number of independent intellectual property rights of integrated pressure sensor products, widely used in automobile, engineering machinery, instruments, coal, petroleum, chemical, electric power, metallurgy, environmental protection, light industry and other industrial automation field.