... 2008 & SGS Certification Burglarproof & Never ruste Composite manhole cover:Hunan Timelion Composite Materials Co., Ltd., established in 1999, ... manufacturer in China. We specialize in producing and supplying composite material (FRP/GRP) manhole covers, rain gratings, tree ... in many other countries, such as Malaysia, Thailand, Vietnam, United Arab Emirates, Oman, Bulgaria, Kuwait, Qatar, India, Greece ...