History: Leihua company was found by Mr. Roy Wang in 2004, Mr. Roy Wang and his team have spent many years searching for the perfect slate which is of the highest quality. We have invested heavily in the quarry and have also helped to enhance the life of the local community by providing work for over 20 people. Other local community projects have included help with the funding of a new school next to our quarry and new roads and infrastructure to the remote village. Quality: We produce natural blue black roofing slates which have passed the test of BS EN 12326 Part 2: 2000 and classifies the slate as A1, and also have passed the test of ASTM C406 classified the slate as grade S1 We regard quality as life of our company, we have our own quality control system covering all process from cutting, spliting, inspection, packing,transportation, documents, tracking etc. we promise, each piece of slate will be carefully selected by our professional inspectors before cargo is shipped to our customer, we guarantee each slate is good quality. We promise to provide Premium Grad Roofing slate at Competitive rate, and delivery in time. We are professional, very honest, we would like to establish a long time business relationship with esteemed company. If you are in demand of good quality slates, please don&＃39;t hesitate to send us your enquiry by email, fax, or call us directly, we will answer your questions quickly.Shanghai Leihua Ziyang Slat