Shandong Province, the source of the source line factory   

Cheng thread factory in Shandong province Huimin County construction source line, pagoda thread, sealing line, self-locking device, safety and other products with the professional production and processing companies, has a complete and scientific quality management system. The integrity, strength and quality of products in Shandong Province, which is the source of honesty and integrity, quality of products in the industry are recognized by the industry. Welcome friends from all walks of life come to visit, guidance and business negotiation.