Jinan Haijinna Door-Window Machine Co., Ltd. is specialized in designing, producting and saling of Alu-Plastic Door-Window Machines and Insulating Glass Machines for more than 10 years. Producting quality products, doing excellent brand, that makes our company having been famous brand manufacturer in our industry."Rputation gains success,quality creats future" is our management. We keep on absorbing advance technology and management experience in our country and abroad, raising our quality level of products.We have professional designing team, manufacturing experience and high efficient saling and service team. To give top quality equipment and service to users.We hope to build long term cooperation with people and to creat beartiful future together.