our factory established in 1999, is a professional building construction and safety inspection institution for the maintenance of facilities doing repair reinforcement work along with inspection. We have researched bridge expansion joint systems based on techniques experiences through ...

Ningbo Sinzen Construction Hardware Co., Ltd. Is one of the largest Manufacturers and Exporters fittings point-fixed glass walls in China. Our company is fully involved study, design, manufacturing, marketing, service consulting walls. So far it has provided numerous quality products for ...