Zhengzhou Zhongyuan Silande High Technology Co., Ltd (SILANDE) was founded in 1983, thrived as the first hi-tech company specialized in sealant research, manufacture, and sale. The qualified personnel, advanced technology, scientific management, and large sales market are all its characteristics. There are about 550 personnel including 100 engineers and technicians.

We possess 6 professional laboratories with more than 300 sets of testing devices. Our laboratory authorized by CNAS since year 2015.

Three production plants with one research center undertake different production tasks. Most of production lines are imported from Germany and Italy with advanced technology and high efficiency.

The company has passed ISO9001 Quality System Certificate, ISO14001 Environment System Certificate and ISO45001 OHS Certificate. IGU series products had passed European standard EN1279/ ETAG002 tested in IFT Rosenheim Lab, Germany and TUV Lab, Nederland.

Our capacity is 82,000T per year with Polysulfide sealant 8500T/ year, Silicone sealant 70,000T/year, Hot applied butyl sealant 2500T/year, other sealant 1000T/year. Apart domestic market, we export to Europe, S. Korea, South & South East Asia (Bangladesh, Philippines, India, Singapore, Malaysia, Vietnam etc.), Middle East areas, USA, Mexico, and South America… more than 40 countries and areas. Our quality target is pursuing advanced technique, top quality and high efficiency.