广州龙康机电设备有限公司专注于排水设施多年，拥有丰富的雨水疏导应用经验、行业领先的技术水平及完善的售后服务，雨水的疏导与净化始终是我们的业务核心，先进的排水设施产品和以人为本的设计理念。公司的产品广泛应用于国内的市政道路和重点工程。
公司主营树脂混凝土排水沟、集水井、路缘石、并配套不同材质沟盖板（缝隙式盖板、不锈钢盖板、镀锌钢盖板、球墨铸铁盖板等）。
树脂混凝土排水沟以节能、环保的新型绿色建筑材料为原料，严格按照欧洲EN1433标准设计、生产，采用树脂代替混凝土中的水泥，将其它骨料粘合起来，其强度及化学稳定性较普通硅酸盐混凝土有极大的提高，从而具有高抗压、抗折、耐冻、不腐蚀、不风化、安装便捷、易维护、一体成型、外形美观等特点。
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树脂成品排水沟在现代化的发展中慢慢替代了传统的水泥排水沟，在城市排水系统中贡献出了巨大的力量，提升了雨季城市道路雨水排放的效率。树脂成品排水沟因为使用的是树脂为材料制作成的，这也使得它能适合城市、乡村和市内道路、工业区中所有需要排水的地方，例如快速道路，景观道路，车站，弧形交通路面等。
排水系统是现在每一座城市都必不可少的设施，它承担着一座城市的污水排放，对人们的生活起着重要的作用。
缝隙排水沟与传统的点式排水系统相比其最显而易见的优势就是增大了排水面积
与传统的排水沟不同，线性排水沟有着很强的优势，比如环保性，美观性等都不是传统的排水沟可以比的
缝隙式排水沟的使用率很高，但是作为另一款新产品的点式排水沟也是有着不错的排水效率的，不过这两款产品实际还是有着一些差别的
树脂排水沟就目前来说是当下很城市排水系统中常用的产品之一，它独有的特色性能使得它备受欢迎。树脂排水沟的核心科技，除了在现场就能到达精度要求而削减资料运输成本以外，整体式排水沟相对与铸铁来说，树脂混凝土能耗少，在制造过程中大约节约30%的能量消耗。
树脂成品排水沟的出现，促进了我国城市排水系统的优化，带来了新一轮的整改。
盖板在现在的排水系统中扮演着很重要的角色，在日常中，盖板对路面的安全起着很重要的作用。
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线性排水系统施工主要分为六个步骤：开挖基槽、浇筑基槽混凝土底、基铺设排水沟（集水井）、浇筑混凝土基槽侧边翼
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排水沟、边沟、截水沟的测量放样应适当加密施工放样点，确保沟体线形美丽、顺适，并按规划要求设置沉降缝。
FreeMarker template error:
The following has evaluated to null or missing:
==> index [in template "common_foot.ftl" at line 226, column 6]
Tip: If the failing expression is known to be legally null/missing, either specify a default value with myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing. (These only cover the last step of the expression; to cover the whole expression, use parenthessis: (myOptionVar.foo)!myDefault, (myOptionVar.foo)??
The failing instruction (FTL stack trace):
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==> #if index == 0 [in template "common_foot.ftl" at line 226, column 1]
#include "common_foot.ftl" [in template "index.ftl" at line 662, column 9]
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Java stack trace (for programmers):
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freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...]
at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:98)
at freemarker.core.EvalUtil.compare(EvalUtil.java:230)
at freemarker.core.EvalUtil.compare(EvalUtil.java:148)
at freemarker.core.ComparisonExpression.evalToBoolean(ComparisonExpression.java:103)
at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:84)
at freemarker.core.Environment.visit(Environment.java:265)
at freemarker.core.MixedContent.accept(MixedContent.java:93)
at freemarker.core.Environment.visit(Environment.java:265)
at freemarker.core.Environment.include(Environment.java:1712)
at freemarker.core.Include.accept(Include.java:172)
at freemarker.core.Environment.visit(Environment.java:265)
at freemarker.core.MixedContent.accept(MixedContent.java:93)
at freemarker.core.Environment.visit(Environment.java:265)
at freemarker.core.Environment.process(Environment.java:243)
at freemarker.template.Template.process(Template.java:277)
at com.paidot.ocms.utils.FreemarkerUtils.exportHtml(FreemarkerUtils.java:102)
at com.paidot.ocms.utils.FreemarkerUtils.exportIndex(FreemarkerUtils.java:257)
at com.paidot.ocms.controller.admin.StaticController.toStaticIndex(StaticController.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.jfinal.aop.Invocation.invoke(Invocation.java:73)
at com.jfinal.plugin.activerecord.tx.TxByMethods.intercept(TxByMethods.java:57)
at com.jfinal.aop.Invocation.invoke(Invocation.java:67)
at com.jfinal.plugin.activerecord.tx.TxByMethodRegex.intercept(TxByMethodRegex.java:61)
at com.jfinal.aop.Invocation.invoke(Invocation.java:67)
at com.paidot.ocms.interceptor.SessionInterceptor.intercept(SessionInterceptor.java:27)
at com.jfinal.aop.Invocation.invoke(Invocation.java:67)
at com.paidot.ocms.interceptor.ExceptionIntoLogInterceptor.intercept(ExceptionIntoLogInterceptor.java:30)
at com.jfinal.aop.Invocation.invoke(Invocation.java:67)
at com.paidot.ocms.plugin.shiro.ShiroInterceptor.intercept(ShiroInterceptor.java:59)
at com.jfinal.aop.Invocation.invoke(Invocation.java:67)
at com.jfinal.core.ActionHandler.handle(ActionHandler.java:82)
at com.jfinal.core.JFinalFilter.doFilter(JFinalFilter.java:72)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.paidot.ocms.filter.CmsUrlRewriteFilter.doFilter(CmsUrlRewriteFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:165)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1201)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:317)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)