SHL type boiler system for our company in the summary of foreign advanced boiler technology, based on the same time to learn from other similar products of the operating experience, and the product development. In the technology has been a breakthrough in the overall performance of the boiler has a leading level in the country, and have obtained a number of practical patents. All closed membrane wall structure, the boiler efficiency is higher than the national standard 3-4%. So far, our company has successively produced a hot water boiler and steam boiler more than 10 kinds of SHL series of different specifications and types of products.