Pulstec Industrial Co said Wednesday it will establish a wholly owned subsidiary in December in Tianjin, China, to sell testers for DVDs and optical disks. Capitalized at $200,000, Pulstec Tianjin Co will be established in Tianjin's bonded (tax-exempt) district to offer maintenance services and conduct market research, as well as selling the DVD and optical disk testers, Pulstec said.