SIN Refrigeration Equipment Co., LTD.formerly known as Tianjin HongQiRefrigeration Equipment co., LTD., since it was founded in 1979, there isnearly 40 years of history.In the refrigeration and air conditioning industry, ithas a large scale and influence. Our company specializes in assembly coldstorage(fresh, chilled, frozen) and we have the ability to design, development,manufacture, sale, installation and service.