Window frame screws with flat or pan or cylindrical head Hi-Low thread

Ningbo Sunlong Imp and Exp Co., Ltd located in Ningbo City, Zhejiang Province. It is 120 kilometers from Shanghai and 100 kilometers Hangzhou.

Sunlong's parent company is Ningbo Shengtai Fastener Technology Co., Ltd  ( TARIC additional code C821 39.6% ) which specialized in the production of various kinds of Bi-metal, self-tapping, drilling screws, wood screws and non-standard fasteners for more than 30 years. Located in Hangzhou Bay New Area of Ningbo, the company occupies an area of 5000 square meters, employs more than 50 people and owns more than 100 sets of machines and equipments, including: 40 cold pier machines and 30 silk rubbing machines, more than 20 large lengthened head rubbing machines, 6 tail drilling machines, 8 tail cutting machines (3 lengthened tail cutting machines), 6 straightening machines, 10 screw threading machines (4 lengthened cushion threading machines), and 1 own heat treatment production line. The monthly output can reach more than 500 tons , 30-40 containers. 

Strictly control the use of high-quality steel production at the same time, the factory is also equipped with: attack speed testing machine, torque testing instrument, mirror phase analyzer, cutting machine, grinding machine and other full set of testing equipment, for high-quality products escort!

Our main markets are: Germany, Italy, Poland, Czech, Russia, India, Greece, UK etc. 

With stable and reliable quality, good reputation and competitive price, our products have been well received by customers at home and abroad, and become a long-term partner for customers to rely on and cooperate with.

Adhering to the tenet of "quality for survival, efficiency for development, and customer for center", the company sincerely serves the vast number of new and old customers to seek common development.