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Construction Workers at Sunset

Plasitence 凱信

Plan 好的計劃

Positive 正面的態度

Persistence 持續不懈的努力

Welcome to Plasitence 凱信. We are a Construction and Trading Company offering a wide range of customizable services to fit all of our customers’ needs. Take a look through our site to learn more about what we have to offer, and don’t hesitate to reach out with any questions.

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About Plasitence

What we can help

Our company name Plasitence comes from three words namely Plan, Positive & Persistence. These are the spirits when we start our business.

Plasitence Development (HK) Limited 凱信發展(香港)有限公司 is based in Hong Kong and it's associated company Plasitence Trading Engineering Company Limited 凱信工程貿易有限公司 are the Hong Kong construction materials supplier mainly supply drainage and flow control products in Hong Kong and Macau. 


We are the flood control expert, we can bespoke supply innovative flood preventive solutions – Self Closing Flood Barriers, Auto flip up flood barrier to suit your needs.

We are also focus to supply the drainage products like multipart cover, control valves like flap valve, stoplog & penstock for civil projects


We have more than 16 years experience in sales and marketing for these products in construction industry. To fulfill the customers’ needs is our prime concern, we commit what we say, and always do our best.

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Natural Water System

Our Products

Flood & Water Control

With our constantly growing product inventory, we have imported varies types of flood barriers, flap valves, multi part cover, penstock, stoplog, FRP products, Polymer concrete U-channel and special valves like vortex flow control unit and float controlled penstock/flap valve for drainage & sewerage works

Home: Our Products

Manual Stacking Aluminium Flood Barrier

Light weight and robust

Automatic flood gate

24/7 protection

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Hinge and Swing Flood Gate

Tailor made to fulfill your needs

Special type flood barrier

To suit your different needs

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Multipart Cover

High Quality Product

Flap valve & stoplog

Imported from High Quality Manufacturers

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FRP Engineering Products

Handrail, cat ladder, manhole cover, decking, etc

Vortex flow control unit

Product originator


Float Controlled flap valve (penstock)

Reliable and high quality

Polymer Concrete U-channel and grating

Exquisite Craftsmanship


Sandless sandbags

User friendly and biogradable

Dam Easy Flood Door

Innovative, quick & reliable solution

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Oil Containment Boom

We supply full range of oil spill response equipment including oil containment booms, oil recovery skimmers, oil absorbent material, oil dispersant system, turbidity curtains, oil storage devices.

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