Rainbow is a gas model based on independent research and development, design and production and sales of the company. The company's gas gathering mode shape and design of recreational facilities , manufacturing scale , independent sales ; company years of industry experience have taught us better understand your needs , improve the technical team and management team that we may better serve you , the number of common choice of hundreds of companies .

Rainbow is a gas model based on independent research and development, design and production and sales of the company. The company's gas gathering mode shape and design of recreational facilities , manufacturing scale , independent sales ; company years of industry experience have taught us better understand your needs , improve the technical team and management team that we may better serve you , the number of common choice of hundreds of companies .