The Manila Police District (MPD) has sought the help of the National Bureau of Investigation (NBI) to identify and hunt down two suspected Chinese Triad chemists who were seen frequenting a shabu laboratory in Binondo, Manila.

Senior Superintendent Nelson Yabut, MPD Station 11 chief, said some witnesses told investigators that they saw Chinese-looking men visit the 22nd floor of Fortuna Palace building in Binondo, which was occupied by a suspected Chinese Triad member named Samson Tan.

MPD and Philippine Drug Enforcement Agency agents raided the condominium unit on Monday and seized P100-million worth of "liquid shabu."

The raid was conducted after the heavily-tattooed Tan was arrested in a drug bust in Binondo district last Friday.

Police were set to file illegal possession of dangerous drugs and maintenance of a shabu laboratory against Tan at the Manila City Regional Trial Court.

Yabut said Tan's visitors could be Chinese Triad chemists who processed the liquid shabu inside the condominium unit.

He said the MPD has sought the help of the NBI to locate and arrest Tan's visitors.

During the raid, PDEA chemists also found several types of chemicals in containers, funnels, strainers, filter paper, rolls of aluminum foil, an electric clothes dryer, a tooter, a sachet of shabu and several dried substances inside Tan’s bedroom. Four plastic containers of near-frozen liquid chemicals were found inside a refrigerator.

Chemists said some five kilos of shabu could be dried and refined inside the bedroom with the amount of liquid chemicals they seized.

A PDEA chemist said Tan's room could be a drying and filtering area where shabu precursors are crystallized and packed into sachets. Shabu precursors in liquid form can be easily brought in inside the building since it looks like an ordinary black "gulaman" or jelly, the chemists noted.

They said Tan occupies the topmost floor of the building to mask the odor of shabu being processed.

Tan, who has been occupying the room since January, said he is from Fujian, China and entered the Philippines as a trader. He said he and his wife have a stall at the 168 Mall in Divisoria market district.